i think that this genre can only contain 1 game and i think that game already exists.
Rock Band is an incredible game and the song list is updated every tuesday.
Plus i don't have enough room for so much plastic!
Yeah sure the GH4 instruments might be better but if i wanted better drums than the Rock Band ones i would just buy a real drum kit.
For me Rock Band is the only game i need for this genre, and i think it will remain that way because Rock Band came out first.
Now you say that Guitar Hero came first, but can i inform you that Harmonix used to make the Guitar Hero games.