Replay Challenged

Why don't more NFL teams go no huddle when their is a questionable play that might be challenged so as to prevent the opposition from getting a good replay look at it before making their decision? Once the next play is run, you can't go back.

Along those same lines, if you are the defense and you haven't been able to see a replay of a disputed TD, let the offense line up for the extra point and then go offsides. It will only be 5 yards on the kickoff, but should give your team enough time to finally see a replay to determine if you should challenge.

Just think of how that would have benefitted Minnesota in their game with the Eagles on TO's touchdown "catch."