Other than the big names included within the Title, I see nothing that will pull me over to buy this game as of yet, after playing Smash Bro, Power Stone, and what have you, All Stars is just lacking in the clarity overall...definitely its gameplay. Like you stated, characters just explode and or fly across the screen with little to no impact at all.
Them hiding Health Bars leaving us to only die by Supers, I'm wondering what's the use of Stock anyway lol, might as well just play timed matches. I was stoked for this game until I seen every bit of gameplay videos only to be overwhelmingly disappointed. I'm not going to count it out yet, but I damn show ain't going to count it in either, I just hope it can bounce back and make people wanna play it because of it's "gameplay/mechanics/concept" and not just because of "popular names"...
If anyone can make All Stars the game it "should" be, then Seth is definitely the guy for the Job.
BTW, congrats to Seth, and I approve of this move and hope the best for what he'll bring in the future.