First of all, delighted to hear this game is being made -- if I can finally replace Madden, I'll stop screaming obscenities at the television when the Browns aren't on TV -- could prolong my marriage!
One question I don't think I've seen (and forgive me if you've already answered it): are you going to include something DVOA from Football Outsiders? I know OOTP has the deal with Baseball Prospectus, I was wondering if you were pursuing something similar. Offensive line is obviously the most difficult to judge purely at a statistical level; if you attribute sack blame properly, I think that'll go a long way.
The most important thing, and you've touched on a bit already, is the draft. However, I wanted to ask if UDFAs will be in the game too, and how you would track them down?