You should give players a way to ramp up difficulty (and rewards!) faster, manually, like you did for the Orb Vallis fissure farms.
What about a new Void Key system...
Have an alter you deposit Radiant Relics in Arbiters of Hexis hub or something, like Eidolon shrine... Also cost some Vitus Essence, but this mode pays more back.
Each time you deposit the relic you get a random mission. [Will it display next objective type and faction? Maybe that information becomes unavailable later as difficulty rises?]
Each mission is more difficult than last, with scaling rewards and you cash out when you're done. (Similar to Payday 2 Crime Spree mode)
You can match-make or premade; When match-making it bases it on the difficulty you are credited as achieving, allowing people to cash out when they feel done and not screw over people.
Call that Elite Arbitrations... And no Arbitration drones, no revives; The difficulty comes from scaling and maybe other factors.
Spend some Vitus essences on entry like The Index, but more is paid out faster... (Risk and reward!)
Farm items and deposit them to ramp up difficulty.
Hack some consoles to radio for reinforcements.
Or, something along the lines of the Eidolon shrine, make it spawn at the spawn and put a waypoint on it.
(Also, you could remove rezzes on the hardest setting or modes, such as if you take Index approach.)
Diversity and uniqueness to Arbitrations:
You should also add Assassin encounters as a percentage for staying in longer, or boss encounters, perhaps as a challenge to overcome to earn your reward as well as breaking the tedium.
I had an idea last year for a new frame/elite version of Stalker Acolyte that attacks frames at THEIR STRONGEST, not weakest... And they use Archwing guns and such, think like a crazy edge lord looking Hildryn.
That would add a lot of fun and challenge to the mode, they could spawn 30+ minutes into Arbitrations, all but guaranteed to spawn if you stay just over an hour. This is how you would farm that new Warframe, or their loot if it wasn't playable like my original idea has it.
You could also add new spawns or simply replace drones with Index and Rathuum enemies mixed into spawns, to make the mode more interesting and challenging.
Arbitrations need to have scaling rewards to better reward the time invested and difficulty.
And as many have said... 5 minutes or equivalent, not 10 minutes / waves.
Also, need to normalize the time disparity between modes and maps.
Another issue is Arbitration Drones force people bring meta builds, to bring AOE guns like Arca Plasmor, Catchmoon, Lenz, Opticor Vandal, etc... And avoid specific frames like the plague while bringing tank frames.
ALSO, Corpus and Corrupted need to have LESS ARBITRATION DRONES due to Nullifiers being effectively the same thing as Arbitration Drones!
And you NEED TO MAKE ARBITRATION DRONES MORE VISIBLE, ESPECIALLY FOR COLOR BLIND PEOPLE!
(I do not have color blindness but sometimes struggle to spot them, but this is why the AOE meta is further reinforced to deal with them. Also change Parasite enemies to be more visible AND REQUIRE LINE OF SIGHT! 😣)
Arbitration Drones, at present, are almost literally speed bumps in a racing game... Because you don't want people to drive fast... In a racing game... 🤔😒 Fuuuuuuuuuuuunnnnnn... 🙄
(which then causes players to bring off-road vehicles just to bypass the speed bumps as much as possible, even though there are dozens of other cars and choices, choices they may prefer...anti-choice and anti-fun.)
If you're going to keep drones, maybe do like the Ancients for Infested and have different types of Drones and their functions or protection be different and a bit random but MORE of the Drones?
Examples: Damage resistance to a single IPS/element, to a type of Crowd Control, or just copy/paste Infested auras, etc.. That way we have more diversity in play and loadouts we can bring...
(YAY for CC frames being viable! As someone else said, it would be great if CC was LEGITIMATELY viable in Arbitrations because AOE frames unquestionably dominate ESO.)
Enabling recasting abilities on some frames without will also help make more frames playable in Arbitrations.
Examples: Loki, Zephyr, etc.. Also, can Rhino get in on that?
Just buff up the damage a bit on his augment to make it still useful.
Nezha would have been mentioned, but you fixed his issue by giving invulnerability window which also works.
Although, that could also work decently for Rhino, BUT it's going to need to be long enough for him to roar and charge then cast iron skin, ideall
Alternative idea for revive system proposed:
1) Ally(s) go down to bleedout and get a debuff on revive.
2) Ally(s) dies next time they would have gone down due to debuff.
3) Ally(s) can clear a debuff by surviving until next wave.
Bleedout timer and a revive cap could be set by difficulty or time spent in mission.
Thus, forgiving and less grief inducing and becomes hard to achieve as difficulty goes up.
This would apply to pets...sorry, but if your pet can't stay alive, I'm not going to risk rezzing it every 5 seconds. Bring a Djinn with augment or something.
Alternative idea for revives 2:
Squishier frames get a downed state / bleedout timer and 2x lives or something to compensate so they can be viable, if played well.
(Focus school revive could apply in this instance and this is just a bandage for now, until broader changes get made and technically you should let Inaros get 1 downed state due to his passive, BUT he is insane so probably not, not unless its removed with arcanes equipped on frame to help newer players or something.)
1) Invulnerability state until players begin moving again.
2) Preserve data for vulnerable frames like Gara; Store buffs locally on all clients and have them check each other for cheating.
3) Reward hosts for staying; maybe a modifier for their progress, 1.5x or bonus resources or Vitus.
4) Require all equipment be fully leveled to participate, like ESO/Sorties tend to do.
5) Give a party icon to notify who the host is and confirmation dialog to exit when you're host.
6) The lack of HUD / UI information while dead in Arbitrations is very vexing and probably leads to people bailing unnecessarily and if nothing else makes it more boring to be dead, because you could be giving information or something engaging or at least see how long your wait is so you can pee or something... Kind of like being dead in R6 Siege isn't a total game over.
7) Force to not let high quit rate / extract ASAP players from being the host, when possible. And, an option to prefer not to host in settings or something, like the "laptop" vs. "desktop" setting, because some people don't have stable situations and know it, be it technology or home life or if playing at work or something.
DE, if you guys keep adding Rivens as-is to the game, you have no one else to blame for boring damage and tank meta and POWER CREEP, especially if you don't make Rivens tied to a weapon's Mastery Level so they even out to roughly same power and usefulness, not " God tier item X God tier riven = DELETE ALL ENEMIES WITHOUT EFFORT. "
And don't get me started on the need for changed enemy scaling, need to rethink CC and its counters so it's viable, changes to enemy AI, enemies that 1 shot and shouldn't, and need for damage 3.0, better boss encounters more like Doma, new mission types or changes...
In short, removing or reducing invulnerability and immunity (I. E. Immune window is better than total immunity) from enemies and remove insane bullet sponge scaling enemies, should be the goal and let player choices and tactics matter to one degree or another without becoming EZ mode...and we are happy to help brainstorm that.
(I know that's a LOT of work, but you can crowd source a lot of ideas! You guys didn't even ask and people like me are working on things like this because we LOVE the game!)
While on the complaints of Arbitrations can we make it so that the enter key twice doesn't boot you out if you're dead?
Or not pop up that dialog altogether, especially when chatting?
Like, literally when you try to talk and you hit enter to send the message, it, for some asinine reason, also pops up a dialogue to ask you really want to leave... and it does this EVERY TIME time you try to talk while you are dead.
Note: I have been in this thread for hours, reading and reacting to all posts and updating my post with ideas and chiming in on great points others made to reinforce them so hopefully they are implemented.