Red War and Forsaken campaign returned to the game with maybe a quick summery of D1. It could help new players know what's going on story wise, also a better tutorial system. Dedicated Servers, I think we all understand how beneficial that would be. Revamp of Strikes, More Crucible/Gambit maps, fix motes dropping through ground. Lessen the time-gating somewhat. More tweaks to underused exotic armor/weapons. Honestly a simple season of bug fixes, weapon/armor tuning, and refreshes on some older content would be nice.