If you use baseball as a guide (the only other sport where the bats/balls can be tinkered with to gain an advantage), he should be suspended. Pitchers are suspended all the time for doctoring baseballs, similarly hitters with corked bats. Most suspensions for this sort of thing in baseball is 8-10 games....not much considering the season is 162 games. Now the NFL doesn't want to look soft here and the Pats* are repeat offenders in rule bending, so I think Brady gets 4 games with it being reduced on appeal to 2 games. Just my gut feeling.