I think the op has an interesting point but LBP is such a promising franchise. Think about a trailer for LBP2... it starts side scrolling levels with new additions just like the last, but then the whole plane filps on itself and the entire experience becomes 3d.
At the same time the same LBP theme goes from whistleing to an entire orchestra score.
you see other online players buzzing through the air in user created airplanes. A community of houses all created by users exists in one town, the camera pans out to reveal lots of towns, then pans out again to reveal the whole world.
Little Big World come up on the screen as people cheer!
This is the future of this franchise, and this is why Sony bought media molecue.








