Lego Rock Band

[Geoshi]

Scheduled for a November 30th release, right before Christmas, and Guitar Hero: Van Halen (slated for December 22nd), I'm on the fence for this. For one, it has the Rock Band ability to load all previous music from RB/2 onto the game, but the fact it only adds the game being made of Lego... really worth it? Like I said, I'm 50/50 at the moment, but if the price is right, I might just buy it.
en.wikipedia.org/wiki/Lego_Rock_Band