I agree with a way to list rules at the very least; my FC has rules, but I have to remind people to follow them because there's nowhere on the FC page directly for me to put them. I feel like knowing what you are and aren't allowed to do before you join is important, because not every FC is going to have rules to a member's liking. The Community Finder was a great step towards this, but having it in-game would make it near unmissable, especially if you can change it so that there's a prompt displaying them before a member is allowed to join.