I always liked scorch once you could cast it on the move

I always liked scorch once you could cast it on the move.

It did less damage than when standing still and using fireball so you had a REASON to get where you were going and get into place as fast as possible, but at the same time you could keep your rotations going.
You didn't have to press a button po world of Warcraft (Button/ability bloat) in order to use it. Things like ice floes are just one more key-bind I have to make that gets in the way. It also allows you to use your full damage cast time spells on the move which I don't like. The cast bar makes you feel like your character has to concentrate on what they are doing. Sure, a powerfull/skilled person can do things on the run, but they may lose accuracy etc. Thus having a less powerful spell like scorch instead of fireball makes sense in my head.

It gives me something to do, it doesn't take up an extra bar slot/keybind, and it isn't full powered so it doesn't imbalance pvp or whatnot.

Just my two cents.