I feel like the spell effects (or whatever they're called) are not nearly as nice as in Classic.
Be that melee skills or spells like chaos bolt. They look just fine in Classic, but on Retail I'm always thinking that something's off.
On retail their resolution is probably much higher than what ever was in Classic, so how come they kinda look lower res or something. I can't explain it.
Idk maybe I'm crazy, I just can't shake the feeling, hard to make a thread about it. It just doesn't look right.