I'm going to go ahead and resurrect this discussion, because someone else brought it up.
After I had mentioned distributing some of the leader's skills throughout the members of factions and religions in a forum thread, I got to thinking that such an idea might solve dual membership questions. It helps alleviate the problem of serving two leaders by enabling more members actual responsibility. Perhaps leadership obligations could also be distributed amongst faiths in a similar fashion, save the obvious exceptions. Several of these points could be dropped entirely, but most exist to create more options. I see this as a solution to the playergroups with dwindling numbers as well, by allowing each character access to twice as many factions as they currently can see.
* A recruit of an organization basically gets the skills, the channel, and the flag of being a member.
* After proving themselves, members may be granted the rank of lieutenant.
* Lieutenants can perform all tasks that leaders are currently allowed, save punitive measures.
* Only leaders may uninduct, tarnish, banish, blemish, atone, revoke, and absolve.
* Leaders of factions are capable of flagging lieutenants.
* Oathbreaker will apply only to cabals.
* Tribunals may be joined and left freely, based on a person's citizenship.
* Lieutenants and recruits may join a tribunal and a cabal.
* Leaders may only be a member of one faction.
* A new field will be added to the member list which identifies who inducted which members.
* Leaving factions hides faction oriented skills instead of setting them to zero.
*A character may only be a lieutenant in either a cabal or tribunal at any one time.
* When there is only one flagged leader, the sole leader will have the ability to grant the second leader flag to a lieutenant of their faction.
*When no flagged leaders remain, the faction has a system of allowing players to promote a leader by secret ballot with more than half the existing members nomination. Failed votes would reset the balloting.