Crested Butte is awesome, IF the High and North Face T Bar terrain is open and IF you can ski it.
If the good stuff is closed or you don't ski it, it isn't worth the trip. Minus those two lifts, you have a few long cruisers off of paradise, some short cruisers off East River, some REALLY SHORT cruisers on West Wall, pretty short cruisers on Gold Link, and a couple of decent advanced runs off Silver Queen. The green runs on Red Lady can be somewhat funish, I guess.
Really good terrain off the T bars and short cruisers are pretty much the CB experience. The Headwall and North Face areas are very approachable for a decent skier, a wrong turn in Spellbound and Teocalli cliffs you out, Billy goat pillow moves are a must in Third Bowl.
Late January is NOT late enough to have even a reasonable expectation for the T Bar terrain to be open I'm not sure it has ever opened that early. Any chance of March or April?
Skied 4 days at CB 2 seasons ago in April, closing weekend on Midwinter snow top to bottom. The mountain is all North, High up, sheltered, so go there late in the season.
Edit- on second thought, Banana was a bit rough in snow quality in April. Faces a bit West. Everything else stellar.