Thanks for the bill!
While I agree that right now the region can only support 3 legislators, I don't think it'll be that way forever. Maybe we should set some kind of trigger for the legislature going back up to five? Something like:
4. Should the population of the IDS increase to over 40 voters, the legislature will revert to five members, elected in a set of 3 during odd numbered months and 2 in even numbered months.
When we were changing the system to accomodate the staggered voting, I remember that I considered making the number key to the number of citizens. I don't recall why we settled on the current system, though. It works fine on paper to key the size to the number running, but vacancies during the term can become problematic.