Just tried this one out. I've only really seen Winterhold so far (Frostfall, Realistic Needs, Live Another Life and fast travel disabled without an axe - I may be there for a while ). Anyway, initial impressions.
Externally, I love it. Winterhold looks like it might have actually once been a mighty city rather than a collection of peasant huts providing services to the College. It's all a huge improvement. I like the layout, I like the ruins and the additional services seem sensible and balanced.
Internally ... everything is so clean, it makes my hands itch. I've always been a fan of the dirty, cluttered look of vanilla Skyrim. The mess makes the place seem more lived in and less like a construct in a computer game. That said, I know there are some people out there who can't look at all that clutter without wanting to reach for a mop and broom. I couldn't say that the clean-up was a bad thing ... but personally, I find it distracting. Oddly enough the Immersive College of Winterhold mod bothered me for the exact same reasons. Maybe it's just a Winterhold thing :)
Obviously, I want to see the other locations before I make up my mind. Right now though, I'm genuinely in two minds about this one.