After getting his hands on the creation mode from Guitar Hero World Tour, Rock Band 2 Lead Designer Dan Teasdale would very much like to add something along those lines to his game, but isn't going to just copycat the idea to get it in, as he wants the experience to be "authentic." No "half-arsing" it here:

"We've dabbled around with stuff like that before, with Frequency and Amplitude, and we learned a lot of lessons from it. The main one is that you can't do it half-arsed. If you want to do a way to let players create and distribute music, you have to go all-in - not just do it as a bullet on the back of a box.

We actually want to find a way to for people to create music and express themselves, but when we do we want to make sure that people can sing, or the songs can be longer than three minutes, or that you can have more than 1200 notes, or that you're not tied to some dodgy sample somewhere. We want to make sure it's an authentic experience and it fits on the platform. -- Dan Teasdale, to VideoGamer.com

For those who have played with Guitar Hero World Tour's creation, how do you think Rock Band could improve it?