This to me was a departure from the slightly old feeling formula of the past games and an attempt to do some new things. I think this game is definitely a fun game even if there are annoyances to be found.
The game uses audio from the movies, which is good and bad for me. The audio is well done and as always it is nice to hear those familiar voices, but it does kill the humor and creativity of a lot of the cutscenes. I wish they had went back to no audio for the voices.
The character wheel in game is useful but can definitely be cumbersome as it becomes an extra step in getting to the full roster, which when you have a lot of characters of when free roaming is very important.
The questing is crap to me. Making me go back again to other levels and get items is not fun, it is boring. This is a feature I think was fixed well in more recent Lego outings.
The mythril equipment was very good and I think brought creativity to the game, especially with the musical shoes and the Disco Phial.
Combat was so so, I actully thought fighting would be improved for a game like this but it was the same.
Level design was done well and I think encapsulated those scenes very well. If not for the many game breaking glitches and the ability to somehow get 1 or 2 extra minikits or items over the limit effectively keeping you from reaching 100%.
Overall I would recommend this game with a 7.5 / 10. The newer games have improved this formula but this one is left in that time between old and new.