1)Groups are independant entities; we have no control over who joins someone else's group, nor how they are run.
2)Group access could potentially be used to circumvent bans -if nothing else they allow a "back door" for people to be a part of the CDS even after having been banned.
3)Group management comes with drama, and that drama will be put at our feet starting with the first breakup where the citizen partner is kicked out of their group and we're asked to mediate (and we will be -regardless of whatever policies we bring up).
4)It makes citizenship ambiguous
5)Who votes? The officer? What about the folks who become officers after the census is taken? Do they get to vote?
That's honestly just scratching the surface; people who are smarter than I am can come up with even better, more detailed arguments as to why this is a horrible, horrible idea.
Please do not do this.