I'm very jealous. I absolutely love this movie and would love to experience it on an IMAX screen again. That was my most wanted sequel in recent years; I remain disappointed that we won't be getting another one.
I agree that the supplements are light -- I can't believe that with how groundbreaking and how difficult it must have been to create Clu, that there's not even a small featurette devoted to it. But the biggest omission, in my opinion? This is a movie that screamed out for a music and effects...