I only have experience from leading native (I'm just a Cpl in NW), and all I can add is this; be friends with your members, but if a member is putting the other members at risk of being trolled, DEAL WITH IT!
A member who starts seriously trolling another regiment can ruin a regiments reputation.
Don't have rules that are
to over the top, In my regiment they don't let you talk in Global, I don't agree with this as it creates a unfriendly environment, but I see the sense in it.
Don't allow racism, I know it is different between two friends but there have been situations in my native clan were we have lost a member because of the usual "banter" (It involved Welsh people and sheeps alright ;P).
Have meetings where the members can express their concerns without being 'attacked' for it.
Meh, this might be shitty advice but I hope it helps
-Bastard