The competition is great, and so nice to see things like this in person. I'm a bit prejudice as I'm the one in charge of it, though. ;-) I can tell you that last year we had over 100 classes, speed painting tournaments with multiple manufacturers, the annual Paint & Take (free mini painting), demos, and tons of exhibitors doing their best to make us buy great stuff. There's minis in the Gen Con Auction, games, tournaments, and pick up games. Gen Con is just accepting events now, so we won't know the full score this year until submission closes. Check the Gen Con forums, and when Events are loaded, look under MHE - Miniatures Hobby Events for classes and other fun activities.
Good luck! Hope to see you there!