Justin Kemppainen, Minnesota Games Examiner, writes:
A completely ridiculous question. That's like asking if we've had enough Star Wars or Mario games. Clearly, by the sheer number of those and other whipped-to-death franchises: no. No, never, and stop talking, stupid.
Seriously though: I, like many, many others, fell prey to the enjoyment of brandishing squeaky plastic banjos while mashing colorful buttons in sync with twitching a little lever and wrenching the whammy bar (whether or not its actually appropriate). Guitar Hero is fun. I will say, however, that I've never done this, or anything like it.
The Guitar Hero branch has now recently taken to encourage top-name artists to start selling out, not that groups like Aerosmith and Metallica haven't done so already a million times over. The franchise has reached a stage where each released game is just a new pile of songs, not any amazing new revelations in gameplay.