Suggestions I have but people may not agree with.
Skills - Add back in skills but make sure they are overhauled / reworked to work better for all players. I do agree there were some broken skills during 2.0 but I did like the armor and health regen skills I thought they brought in a skill factor other than just aiming better or having better gear to outlast someone.
Weapons - Rework weapons so its not just shotgun meta or scout meta? more autos??
New armor - ???? maybe some new armor you can get in the ark dungeon or earn tickets or something for completing the dungeon killing lets say a dungeon boss or sum that can be spent on better armor??
Banks - I feel myself personally after you start trying to get upgrades your bank will fill super fast and it gets really hard to store stuff if you haven't purchased a bank upgrade so maybe make 2 instead of just 1 free, usually people use gang storage for getting rid of some of the clutter.
Crafting - Not sure if This version will have this problem but epics with absolutely no stats to go with them doesn't seem all that fair or plausible to me? Atleast give it 1 stat not zip??
Yeah that's all I got for now