Or....and I know this is a stretch....they could do a game called Rock Band 4.
As far as Blitz goes, I think it will be a success and a failure at the same time. I expect the buy rate to be fairly high from people wanting the songs. I expect the actual play rate to be pretty low.
Yeah - with the low sales of the Normal Rock Band games, I was looking for ways for HMX to get incremental sales and broaden the sales base of DLC - aside from the main game. :D