For anyone who wishes to benefit, and against the problems blanks cause amongst themselves on our own. There would be two sets of rules. The first is for outside the games. All allied teams still see to their own and their partners' needs first, of course, but after that, they are to assist any other allied team as they can. Ideally, by some kind of trade, but even several teams offering a little each for nothing would make a difference, if one was badly in need.
The second is for the games. Everyone must understand that all teams still must compete as best they can. However, they are to try to consider ways to win without causing undue harm to the others, when possible. If not, well... no one can help what the judges do. And so no allied teams are to carry vendettas against each other from within the games to outside them.
Altogether, all teams involved are benefited by and protected from all their allies. The more teams participate, the greater the benefits and protection for each.