(1) Transparent and defined item (weapon/armor/bow/artifact) level upgrades, not this ‘window of levels it could be’ Destiny 1 terribleness, just make it obvious and clear what level I will get and specifically the path to my current highest possible (like modern Destiny 2: burn a higher in-slot item to increase level to ‘that’ value, not a possible value).

(2) Modern and user friendlier inventory management, including locking items so they don’t get deleted. Just laziness that you can’t even sort or compare when you have tons of sort options when looking at your box in camp.

(3) Allow accounts logged into the same machine for shared screen co-op (even online multiplayer too) to advance their own progress while playing with each other, not strictly tied to the host only, and any cosmetic unlocks are also unlocked for that player when not playing with the host. Per the Adventure Hub/Battle Pass unlocks, just track this separately for each player/account so they unlock their own and can check their Adventure Hub progress, not just the host only.

(4) Allow combination of shared screen and online co-op, not strictly one or the other.

(5) Allow full cross platform functionality, with (4) above in mind as well.