Your idea is an excellent one petercooper1958
I just remembered when I had read your post that it is currently being done on the gaming consoles. like Ghost Recon Future Soldier in which I play on the Xbox 360.
How it works is this:
you go online after booting up your game in console.
you then choose match-play
when you are in the lobby you choose which map you want to fight in and wait to be assigned to a squad. It then counts down on a 10 minute clock for both squads to be filled 4 players on each squad.
Then it loads the game for a duration of 10 minutes to accomplish the goal for each squad.
Yes there can be a variant of this on here for Match-Play & Alt-Shot games as well as country club tournaments.
Again, good post.