Gary nailed it. It's not just the system but every aspects of the game should be discussed : heroic or gritty, fantasy or SF, system A or system B, pizza or veggie dip... Obviously everyone can bail out so there's no point insisting on a type of game the GM doesn't care for unless you offer to run the game yourself. Even then it doesn't mean the rest of the group will follow you.
Originally Posted by gdmcbride
Eventually it could be time to realize you have nothing in common with the group you planned to play with. I personally prefer no game than a game I don't enjoy but YMMV
Au gibet noir, manchot aimable, dansent, dansent les paladins
Les maigres paladins du diable les squelettes de Saladins.