I think it should be that no one can take any piles, resource buildings or gold mines and can't attack barbarians until turn 40. That way, about all a person can do is build troops and tech up. The trick will be deploying the correct troops.

I'd say that scouting is also forbidden, since it can't be effectively dealt with without killing somebody's troops. Perhaps building outposts should also be banned!

For something like this we need to think of all the problems before we get to them and then have to make up rules on the spot. That makes for arguments and nobody wants that, right?

absolutely sir, positively and certainly too.
Well I'm happy with what you've suggested ,just depends now if anyone else is ..