Eh, I might be in the minority here, but I honestly have never had that much of a problem with Brawl's aesthetics, other than the camera and the lack of high-% knockback screams, certainly not to the level that a lot of Melee fans and purists who so regularly voice such concerns do. Stages are getting bigger, the camera has been Melee-fied, and I really don't care much for Melee's visual or sound effects other than the aforementioned screams.
I honestly think much of the concern over aesthetics is primarily nostalgia-based. Sometimes there's a legitimate point, such as stage size, but then when we get to things like graphic effects, textures, and even models in a way other than size somehow being superior in Melee? I dunno, I can't bring myself to understand that POV. I'm too engrosed with the mechanics and the general Melee feel being brought back to really ponder upon those things. I would've even been fine if no animations had been changed whatsoever. In fact, I'm not a big supporter for such changes unless they're really necessary (come on, Ganon's old man run was not that bad).
I guess what I'm trying to say is, I can't really sympathize. Bringing back Melee's aesthetics are really not that important to me. Bringing back the speed, the tech skill (where it counts and doesn't in turn take away useful, non-broken options introduced in Brawl), and the general feel of Melee is so much more of a priority to me that I hardly even spare a thought to the other stuff.