I would love to see more mathcore. We got a lot of Dillinger and Converge (and ETID but i'm not a big fan of them) but I'd love to see more old school math! There's only one Deadguy song and one Botch song, they both deserve more charts. Maybe some Playing Enemy too
Edit: sorry I'm an idiot, there's three Botch charts, but one of them wants me to play a riff that uses octave-shifting, but without any pedals