I'm interested in something that requires skill.
Not like it is now, you just spam autoattack and use your skills, yay no rotations or anything.
And its just random monster mashing, this is like diablo1/2.
I figured this game has great potential, and I'm confident that they would succeed in making the game mechanism, or rather the skills more complex, debuffs, conditions, dispells etc..
One reason why I love wow is that there is just so many things, when in arena it's not just about killing the enemy, its about strategy and know what to do if the enemy uses x ability.

Now I'm not the best arena player, and I started doing wow arenas just now, after 4 years of wow playing, but still, I love it.