Here are some of the suggestions we've gotten so far in the thread, that seem fairly viable to me:
Reverend Ridge (Golden Gate Canyon State Park) - lots of facilities, showers, etc.
Kelly Dahl - this was the location for the most recent CO hang. It's definitely not bad at all.
Burning Bear - we did a Winter Hang here a few years ago. Lots of trees, kinda remote with a long drive on gravel roads, but it was easily navigable in a Nissan Sentra for the winter hang. Not so much for Jeff's Jeep.....
Kenosha East - no reservations accepted, but it's open year round and is in an area with lots of aspens. Fairly small campground so finding space could be a possible issue. Sounds beautiful though.
Barbour Fork Trail - sounds like a beautiful location that might have the aspens in season, but a potential walk and no facilities. I'm willing to try this if the consensus is that it's the way to go, but I am leaning toward more established campgrounds so some more significant others are willing to make the campout. This place sounds perfect for a smaller, less gear-focused get-together.
Please weigh in with your thoughts on these locations, or any last-minute additions, soon - I'd like to get reservations if necessary before the end of the weekend. Also, if anyone else who's better than me at planning these things (cannibal???) wants to take over and get us settled on a place, I wouldn't complain