If this has been discussed before, feel free to delete this thread.
Take the best players in a franchise's history and that is the team you field, along with the best coach(es).
1) A player is claimed by the team where the player spent the most time. Favre for example, would be claimed by the Packers. Rod Woodson by the Steelers. Even though both players left via fee agency
2) Take the best players and field your 53 man roster.
3) Formulate a way to decide on rules, simply taking today's rules wouldn't work *or* would play a part in which players you'd have to choose. You have to take the player as they were, regardless of substance's they took to get there. If a player took steroids in the 70s and it was legal or they got away with it, then so be it. Or today, majority of the players take illegal performance enhancers so unless they got caught, they are available.
Which team would be the best?