Why couldn't Periphery be on Mayhem? Hell, even Carnifex would fit (they're on Sumerian now, right?).
And I'd rather the Faceless be on Summer Slaughter, I feel like they're probably better inside than outside. I will agree about VoM, though. I'm not a huge fan of them, but their live show is killer.
Didn't even think of them, haha. I barely listen to them, but I like 'em. As far as I know, Carnifex is still on Victory.
The Faceless fit better on Summmer Slaughter, but being on a big tour could get them an even bigger fanbase. Who knows.
Could be any Sumerian band on Mayhem, but some of the smaller one's I couldn't see. I was hoping ATB would be, but they were just announced for Warped today.