Totally agree. The best way to make the rooms... well, Incredible... would have been to borrow the sleek, modern and upscale decorating aesthetic from the films, perhaps with a couple of subtle, only-fans-will-notice character references. Great mid-century modern furniture and light fixtures are so huge right now, it could have been a knockout.
Granted, I rather like the Moana makeover at the Polynesian, but it's far more subtle in my view -- with character references appearing mainly in artwork, such that if one didn't know it was from a movie, they would just think it was colorful Polynesian-inspired art. In contrast, the new rooms at the Contemporary seem engineered to make you feel like you're inside an Incredibles gift shop rather than The Incredibles' universe, complete with character pillows and curtains, and cartoony decopauge inside the closets and drawers to continually slap you in the face with flaccid bits of IP. That's not to say that the decor isn't clever and precious, because it is, but as others said, it's the perfect taste and age-appeal level for Art of Animation, not for a sophisticated, grownup-friendly adult resort costing several hundred dollars per night.
It's like Frozen in the Norway Pavilion -- I like and enjoy it in its own right, but I don't feel like it belongs where Disney put it.