In regards to arbitrations & even void fissures survival is easily the most unrewarding game mode in the game as you're entirely time gated and then there's an added hint of rng for life support drops which can be boosted if every survival team uses [insert loot from here]. It would be nice if Survival in those game modes could be changed to an endless exterminate mission. It could work so simple too:
Random kill count required, once achieved round complete, level the enemies up to make it more challenging
I feel like this would give more of a survival feel than camping in a room with loot frames, actually give reason to go and seek out the enemies faster but also it scales the missions enemies in conjunction with the increased rewards not being time gated to 4 drops per 20 minutes or 1 c rotation per 20 mins which is just appalling.