Catan has made me very wary of "open trade" games, because they always seem to devolve to "that one player surely knows how to manipulate his friends into handi

Catan has made me very wary of "open trade" games, because they always seem to devolve to "that one player surely knows how to manipulate his friends into handing him the win real good..." It'd be easier to enjoy if trades were regulated somehow. There are more accessible and more strategically meaningful ways to introduce player interaction into a game.