It should be a one game per platform franchise. LBP 2 (and 3) should not have been PS3 games. The base game is good enough to expand upon with DLC and they should have marketed it as a perennial seller. LBP Vita is my favorite.
http://www.youtube.com/watch?v=F1gWECYYOSo
Please Watch/Share this video so it gets shown in Hollywood.