yeah it seems so. their music is something that's good but not something you want to play and here over and over again. I can't listen to a lot of the songs that are on rock band because I heard and played them so much. :/
I love the Beatles but I think playing and hearing them over and over works the same as it does in the Rock Band Games. You said you can't listen to a lot of songs on Rock Band because of how much they're played, that ties directly into people only wanting to play songs they know and like. For example; I really can't stand the song, Eye of the Tiger and yet people love playing it, over and over, and that makes me like the song even less. If it's a song I like it'll take a while longer to have that kind of effect on me, but I like most of the songs anyways. What makes rock so much fun for me is hearing new songs and liking almost all of them, especially singing because then I get to see the words as well and that's something I really love. I think the Beatles game would have the problem with the most well known songs getting overplayed but it would take a long time for me to get tired of them.
I hope they don't make a Beatles only Rock band, I kinda doubt it'll do that great...
But I would LOVE a 50's and 60's music Rock Band, and a keyboard controller would be indeed pretty swell. :3
Harmonix stated that it's not going to be "Rock Band", it's going to be something completely new and I disagree with it not doing well. They may not be liked by everyone but they are probably one of if not the most well known group of musicians. There's a lot they could do with this game and I'm excited to find out what they decide on.