Logically, there are only eight teams that anyone who buys into the 'haven't won an NC since 1999' perspective could support. Two of them play this year meaning there's a 50% random chance of picking the only team who meets that criterion if you choose before the game.
It's safer to wait until after the game and then just start rooting for the winner. You could then start an early campaign to fire their coach next year without waiting to see if they repeat in the next decade or not.
It's an opportunity to pick a new team.
I'll stick with the Vols and whoever is coaching them-- especially when they have one who has a NC ring with UT on it; nine 10-win seasons, and a possible top 10 finish this year.