If it is still open to discussion, I would vote for no trades once the auction starts. People can trade draft position before draft starts, but I have found that trades sometimes really slow down a draft. Everyone starts postin "X for trade" and then waits the entire 2 hours or overnight to wait and see if anyone says anything.
That brings up another point: usually the 2 hour limit is waived overnight. What will be the case here? For those that dont know, you can create proxies on Penn's site so that if you are not around your pick can still be made.