The updates are nice, but speaking from personally attending a FAD a time or two i will easily argue that you gleen even less from them than you can from a Spring Game ( which isn't much at all).
Personally i don't think Snyder cares much for them outside of the interaction with the fans because he views them as disruptive to Fall Practices. Yeah it's only an hour of practice but they are essentially losing about half day. So i don't even take who is going with the #1's or #2's with even the finest grain of salt. What Snyder chooses to show the media/fans 2 weeks before they hit the field really isn't much and probably slight of hand in some ways. ( again even moreso than the Spring Game
My two biggest concerns Oline and RB still aren't anymore settled one way or the other. Really no clue how thats going in that dept. 2 weeks may seem like a small window to resolve it, but we've seen question marks get settled in a far more expedited way than we usually expect time and time again with Snyder. He's the king of managing rosters and plugging holes sufficiently. I think there will be some ugly moments with Oline in weeks 1/2 but the progress will be steady and hopefully solid enough to give us a shot against Auburn.
