Just spitballing an idea here -- I don't claim to have thought this through --
The RA shall be equal to the number of sims + the number of official factions, if an odd number, or the number of sims + the number of factions +1 otherwise. (Alternatively, we can make the Chancellor the Chair of the RA with no vote other than a tie-breaking vote, much as the Vice President chairs the US Senate.)
Each citizen shall identify his/her/itself as a citizen of a CDS sim in which that citizen owns land. If a citizen owns land in more than one sim, the citizen is to choose one sim as their sim of residence."
Each sim shall have one RA representative, who shall be run individually and who shall be elected by the STV method -- single transferable vote -- of voting sim citizens. Further, additional RA seats shall be filled based on factional voting using the borda count method. Factions are to fill their seats within two weeks of certification of the election. If a faction has not identified faction members to fill all won seats, the unfilled seats shall be forfeit and shall revert to the faction that received the next highest borda count, in an iterative process, until all seats are filled. If there are unfilled seats at the conclusion of this process, the Chancellor shall appoint a citizen to fill any such unfilled seats.
This proposal is a wee bit complicated, but it covers the waterfront of past and current proposals, I think. It also addresses RA size and addresses local representation. I am also considering proposing that sims set up some local governance and participation meetings, on Jon's New England model, set up and run by the local representative. This would let us try Jon's experiment without disrupting our larger project -- although, if that model works very well, we can incorporate it upstream as well.
Beathan