Hermione can be quite malicious whenshe thinks her way is the right way. I even look at the scene in PoA when she turns in the Firebolt to McGonagall just because she feels it's the right thing.

The uniform thing annoyed me the most because there was no shortage of Ravenclaw uniforms walking around in the background. There was no reason that detail couldn't be canon. Little things like that really annoy me with adaptations. Big detail changes I can understand because it might be difficult or expensive to pull off but the little things are just unnecessary and borderline disrespectful to the reader/viewer.