All it takes is a trade or two to shuffle the board incredibly. That can't be predicted in a mock. There's always a few trades on day 1, and I'm sure there will be again this year. I mean, Mariota is meeting with the Chargers (17). We're meeting with Parker (25), etc. It's fun to mock it out, but like the Bortles pick last year, we're only a homerun swing away from chaos according to media mock drafts.
Oakland is always a wildcard and there could be a team that makes a Julio Jones like move or a perceived reach (Seattle with Irvin) to change things up.
I love the draft. It's my Christmas and I will have adult beverage in hand to take in all three days of the glory that is the NFL Draft. Plus the potential meltdown on here is entertaining in and of itself.