With the newest Guitar Hero announcement, "Warriors of Rock", I'm convinced that Activision doesn't really know how to handle the Guitar/Band Hero brands. I'm basing this on my experience with the game Band Hero and as a novice rhythm game player but let me put it this way, Activision has left a lot of my money on the table by not giving me what I've looked for in the Band Hero game.
There's three problems with the way Activision is handling Guitar/Band Hero.
1) They are not offering songs that my kids can play or that my kids want to play. Every song is from some obscure rock band or from a popular band from the last four decades. The song list starts and ends with the inclusion of Taylor Swift in Band Hero.
2) They do not offer many songs that are party play oriented despite outfitting the game with party play modes.
3) They've almost completely ignored Country music.
4) Activision doesn't release nearly enough DLC songs.