I understand that most genres of extreme metal tend to not have big followings like pop and rock, but metalheads take their music *very* seriously, and I would love a game like Rock Band that covers the development of, and resurgence of modern extreme metal. Double kick pedal drums, shredding guitars and all sorts of unclean, harsh vocals. The set list could feature a single song for each genre and still not cover them all. The diversity is intense, and yet Rock Band sans DLC feels so samey. To be able to play/sing some Vader songs and not require crazy-expensive equipment would be my dream come true. It's such a shame they over-saturated the market with the games... there was so much left to cover.