Or second most importantly the itemization. Crit/ias/mainstat being pretty much the only stats worth using was one of the worst most dull parts about D3 and I pray that cancer doesnt make its way into D4.
CDR was dumb and spells having cooldowns is lazy garbage programming. The game shouldn't control what abilities we cast and when, we should with our resource management.
If free trade is a thing which I'm sure it will be, then all I want to see is good itemization. I want all those wacky builds to be a thing.
If I want to make a fucking light radius flashlight support character like some kind of asshole then I should be able to.