1.Exp per kill instead of only gaining exp for completing missions. It just seems odd to keep collected loot but get no exp when you fail.
2.Removal of gas chambers or lowering the damage of the poison so you dont die in about 10 seconds trying to figure how to get out of it.
3. Lowering heat gained on heat generating weapons. Melta over heats to fast in heavy combat.
4.Removing crafting time or keeping the time to craft 20 mins or below. i feel this kinda game and time gates of any kind just messes with the experience and funfactor.
5.Lower cds this is essentially a horde kill game cds especially long cds are unneeded itd be better to link to a regenerating resource or if nothing else keeping all cds below 4 seconds so you dont have a big downtime before you can fight the large groups or the nasty massive regen mobs.