I think anyone who read the books before seeing the movies would see it your way.
I thought most of the kids were good, and that most of the adults were awful.
I'm just talking about their looks, not their ability to act.

Harry -- good
Ron -- good
Hermione -- wrong hair, but acceptable
Original Dumbledore -- good
McGonnagal -- good
Snape -- good
Trelawney -- Ok
Hagrid -- fair
Filch -- fair
Olivander -- bad
Lockhart -- bad
Myrtle -- bad
Lupin -- bad
Sirius -- unforgivable
Peter -- unforgivable
Dudley -- unforgivable

... shall I go on?