On the contrary, I think it's a good possibility. Maybe not exactly like Catherine's models, since it's a different engine, but Hashino's already remarked that he wants characters to be a little more life like with the new engine.
I don't mean the in-game assets, I mean the actual factual Soejima art. Smaller heads, broader shoulders, curvier bodies (On the ladies) and things like that.
It's possible that that's just how Soejima differentiates between a teenage character and an adult, I suppose, though Catherine is only a couple of years older than Mitsuru in Arena.
What's with all the hate towards Marie? I haven't played golden yet, so I cant personally say. But from my experience with Persona 4 on the PS2, I found all the characters to be very likable.
I would have assumed the same would be true for Marie also?
Like most things written for Golden, she's very shallow and silly.