Can one be in 2+ clans?
What happens if someone decides to leave or gets kicked out?
The bank and range are too close together.
Not really, look at the rouges den.
About two clans. There'd be a feature where your clan leader could set a thing weather or not you can be in another clan or not. There'd also be two types of clans, a skill clan, and a PKing clan. You'd check this box for whatever type it is. So maybe your leader could set it so that you can be in a skill clan, along with a PKing clan.