NFL Challenges

Wouldn't it be kind of cool to go back in time to the beginning of the NFL. Watch every game and analyze and assume what would be different if there were always challenges. It could change major things within the NFL.
It could quite possibly re-write the entire history of the NFL. Not only that but it could completely change peoples lives. I'd say its safe to assume that there are at least a few couples who met at Super Bowls or Playoff Games. So if the outcomes of certain games were different obviously their records would be different so those games or events would never have happened. So the odds of those two people meeting is really diminished.
It's pretty obvious that any time you change history it has a snowball effect on everything that happens after that. Ask Marty McFly or Doc. But something as unimportant as NFL challenges could sway lives.
Lets look at other decisions that had a major impact. You have to remember to how important some of the NFL teams are to their cities. They also have a major economic impact as well as enjoyment of life. Think about it you watch football for 21 Sunday's a year, 16-17 watching the Vikings, and 2-3 watching other teams. Now during those Sunday often times you're getting together with friends and family. So that is basically 3 weeks of every year watching and enjoying football. What other event or sport draws people together that much?
What if the Packers don't trade for Brett Favre?
What if the Colts draft Ryan Leaf instead of Peyton Manning?
What if Gary Anderson makes the kick in the 1999, NFC championship game?
What if Scott Norwood makes the kick in the 1991 Super Bow?
What if Adam Vinatieri ever missed?
What if Drew Bledsoe never gets hurt, does 6th round pick Tom Brady ever play?
What if Duante Culpepper never got hurt?
What if T.O. wasn't crazy?
This is just the tip of the iceberg. But just think if Gary Anderson had made the kick. We win the Super Bowl by beating the Broncos. Then in 2000 we role into our 2nd NFC championship game in 3 years, and a Super Bowl ring. Would we lose 41-0 and not host a playoff game again for 8 years?