Hey!
Feature i'am most excited in and cant wait to start working on it is definitely Artifact weapons and how they work for druids! :) I think its great alternative for past expansions ''legendary building''.
Stuff i enjoyed in past - small sized raiding (yeah kinda not relevant now), rep grinds (liked how they were done in WOD) and overall accessibility of game is at great level, you learn to prise this even more when you look at other mmos!