Keep in mind, there are instances where 3D can be handled masterfully that isn't cheap..for example; HOTC from USH.
It used a completely different style of 3D; one not really seen within USH and UOR's HHN anymore. And in a sense, it actually enhanced the environments and certain costumes.
I hope people are wrong about it being a 3D house, but I wouldn't be shocked that it is; considering the character we are talking about here being a clown, and her lover has had quite a foray of 3D houses throughout the years.