A Mudra fix come 3.0, just clicking on a Huton and having it automatically perform all the hand signs and then casting. It would be a lot better than what we have now for people with high ping.
Raids that aren't connected between patches (like the Crystal Tower, end the storyline of whatever raid is coming in 3.1 and then move onto the next).
Ability to be mounted and talk to NPCs at the same time and just whatever QoL things have been suggested plenty of times here.