It was alright.
Decent. But these types of movies are starting to get a bit stale.
Animation was smooth.
Sound started to get annoying after a while.
Music was meh. I don't recommend band music. Look through the audio portal, there are plenty of good music there to choose from.
Bottom line: Though a crossover movie is a good idea, some originality would be appreciated. Ever since Alvin-Earthworms SMB:Z series, these types of movies have gotten stale and its getting harder to look better.