Its been a couple of years since the Athlon guys did this but lets do it again.
Create an 11-man offense, 11-man defense, and Special Teams (Punter/Kick/Return) with CURRENT NFL players from 1 school.
Type of offense/defense does not matter.
Person past their prime does not matter, as teams will be evaluated based on a combination of their past/current/future potential.
Hopefully there will be a couple of good teams that we can judge at the end.
Link for reference if needed:
http://espn.go.com/nfl/college