Greater Windows 7 support. Anything you can do to fix the stuttering vsync and anything else that may be causing stuttering. I know only some people are experiencing this but it would be heaven. Support for 7 will end next year but there are people that will continue to use it lets face it.
A fix for the cutscene bug where you can't see the speech bubbles.
A way to backup our characters so that when Homecoming ends one day, we will be able to transfer them to our own private servers should we wish to.
The remaining incarnate slots completed using the info released by the original devs as a guide. There's so much content already for leveling I feel focusing on endgame would be best.
NPC costume pieces for players (like the Lost head tv).
Anything else is a bonus to me.