Yeah, we've been in January twice, had great weather both times, brought our ponchos for the wet rides since it really was nice, but not enough to want to be wet, and loved, loved, loved the crowd levels. We also didn't find that the shorter hours were a problem since there were no lines - we actually did more I think. We ended every evening at Epcot, though, since it was the only one open later. Did the other parks until they closed and then headed to Epcot. Since it's only the world showcase at night and my kids are afraid of Maelstrom but want to be riding something, I think we will never get the "Mexico Song" as it's known in our house, out of our heads. "Let's go again, Mom! Let's go again, Mom! Let's go again, Mom!"
I guess sometimes lines aren't such a bad thing...