I suppose that it is a bit like pissing and moaning about a GOTY release and, since I stopped playing multiplayer shooters, I usually wait for games to become Xbox On Demand downloads at half the launch price or less. It's not that they're asking people to pay for the upgrade that bothers me, its that they're asking so much for it. Whatever--it doesn't matter since I have no desire to learn to play bass and I'm not going to buy it anyway.
BTW, I'm fairly sure that this was in their general FAQ before release:Is there bass in the game?They got hammered by people asking them where bass support was ever since they first showed the product.
Bass is not included on the disk since our primary focus is guitar. However, we realize that there is a high demand for bass guitar, and we are working to release this as downloadable in the near future.