I want to see combat totally revamped.
Combat in WoW has never been fun or immersive, if you look to other games like Monster Hunter World and Anthem, they’re 100 times more fun to play. You can still have the spells like in current WoW, but it should feel more powerful and rewarding and mobs should be more “alive” (referring to MHW where they jump around and do all sorts of stuff).
Graphics would obviously need an overhaul.
Even though I like the graphics now, WoW 2 would have to be different.
Someone rebuilt Lakeshire in Unreal Engine 4 and it looks amazing.
Those are my two main things I’d like to see changed.
Edit: 3rd thing I REALLY want to see changed is how raids turn out.
In current WoW you stand on a round platform with the boss barely moving.
Imagine if an encounter happened where the ending would be the whole raid running away because the boss gets too strong or something like that, that would be NEW and exciting.
Maybe you don’t like that specific situation, but the idea is that we need something new. Entering a raid knowing you will kill all of them 99% of the time is just boring.