After a good number of tales from various FC, this is the set of hints I am following on how to manage a FC. I think thay are reasonable, but any advice is welcome, it maybe I've missed some point
1) Ranks: make sure all ranks do NOT have any disruptive rights over the FC. It is not a question of trust, but of time: sooner or later a bad apple may get a rank he doesn't deserve, and doing nasty things with it. It is not question of "if" this happens, but when. If you care your FC, set your 'when' to never when possible;
2) Gil: you must be the only one that withdraws them. If officers need gil for stuff, you will handle them manually. Same reason as 1);
3) Officers: you need trust them. But trust is not blinded eyes: give them the rights they need to help you effectively, but no more;
4) Promotion/demotion rights: never give them to any rank. The game implements them as free-for-all, aka people can promote/demote to any existing rank but master, even above theirs, so it is a no go. If you really want set them for a reason, you have to make sure hint 1) is fully checked;
5) Special one-time requests from officers/random members: if you need assign some special right to a member, create a temporary rank with just only the needed stuff and give that to the member but remember: if you had given promotion rights, this rank is virtually obtainable by everyone in your FC. You have been warned;
6) Recruitment. You need have a clear idea about how to do your recruitment. You can set a vetting process, make random shouts, having recruiters, anything, but just make your mind how to recruit, and make your recruiters (if any) share it, to avoid misunderstandings. More you go far from vetting, more random is the people you will have in the FC. Set your standards first and let your officers help you on them being met.