I would most like to see these changes:
1. a P2W option that includes a way to pay for a character to be insta-lvl 50 via some donation, time spent in the game or other possibly conditional way besides grinding each alt the traditional way or via farming.
2. Close down or revamp little used zones. Boomtown, Perez, Hollows, Creys Folly, etc. Put them in echo instances from Ouro or make them part of a TF arc.
3. more incarnate content
4. some kind of high level roadmap of changes we can look forward to