So here is my first complaint about RB2.
Why why why do we have to wait and wait for separate controllers, again?
I am not a good enough drummer to really justify upgrading my set right away, but I would love a new guitar with the auto-cal and hopefully more durability and better overdrive activation as promised. But the only way for me to get one is to buy the entire special edition, which would leave me with two drum sets sitting in my game room (I guess the first set could go to Salvation Army or something) and like 184 USB microphones. I could see this scheme for the initial release of Rock Band, but why do it this way with RB2?
As for the compatibility, that is great news. Again, competition helps out everyone. I'm sure they would not have spent much time on this if X360 users didn't have this basic compatibility built in with the Xbox controller standards. Now if they will just make the announcement that they've figured out how to let me play GH2 on the PS3 so I can mothball the PS2.