On the topic of the "Meta Analysis", I feel the biggest failing lately has been increasing layers of unnecessary grind. With Liches, the community has shown that the core loop isn't difficult and can be quickly farmed. But the worst of the grind is front loaded, making the system unappealing to start. First you have to grind murmurs to figure out which mods are needed. Then grind Kuva missions to get relics. Then MAYBE get the mods you actually need from cracking those relics instead of any of the other fodder that are in them. Then trial and error to get the right combination. AND THEN you have to grind through forma'ing the Lich weapin 5 times (which is more than needed for the mods) just to get the full mastery. That was fine on the Paracesis only because it was a one-off special situation...
Why were relics even involved in this? The parazon mods could've have just been made a mission reward from the Kuva missions or missions on the Kuva fortress. Relics are just adding an unnecessary layer. Make the mods more accessible, maybe in exchange make them only good for 2 uses instead of 3.
Then we've got Empyrean. The initial grind was reduced but it never should've been as high as it was. Then once you have your railjack, Intrinsics are a slow process, gear drops are quite low, and until you can get a new reactor (at a 4% drop chance...) most gear you get isn't usable. There is no satisfying loot-cycle with railjack
And now Scarlet Spear, where in an unlikely bug-free scenario, it takes hours upon hours of playing to get any of the rewards. It was touted as a way to get enough Arcanes to be usable, but the cost for them is so high it's infeasible to get enough of even one kind. Plus scores being restricted to an instanced Flotilla instead of just being for the given player regardless of Flotilla.
This is all showing a trend of a lack of respect for players' time. Not to mention the issues of time gating when we can even do things: Eidolons being restricted, Scarlet Spear's entire design, Acolytes/Plague Star, etc