Each game released in either series keeps selling less, and less. There have been tons of people already that are sick of these types of games.
I dont really like these types of games either (GH3 was best) but this is what i would want in gh5 / rb3
Double Bass pedal. Most songs on both games use double bass pedals yet theres only one u can use.
Mic stand. so you can play guitar and mic at the same time
Ability to play songs of ur harddrive (360/PS3) but that wont ever happen because companies only care about making money these days... nothing else.
MOST IMPORTAANTLY i want more notes to paly on guitar/bass. since the very first guitar hero theres only been 5 notes. Why? why not 6? it would make it harder and more fun