A main missing point to how I personally see the game is the lost flavor going into WoD. I really enjoyed the concept of micro battles/mind games on mechanics such as tremor stomping, vanish immuning, 5-8 kiting a warrior or simple things like jumping charge.
Re-adding the server delay into some abilities like meld or mobility cooldowns could possibly do a lot for the game. Such as, maintaining some of the previous expansions flavors on things like shadowsteping a charge or kicking a warstomp cast etc.
Shadowmeld immuning being removed is one of my least favorite things about the expansion, but the tradeoff is obviously worth the game being more responsive as a whole.
You can still shadowmeld immune stuff btw. (priest fear for example) immuning casted things seem a bit harder though.