The bolded bit is the part which would right now make this suggestion unconstitutional. So - how should we change it?
You could add the words “except as otherwise provided in this article” after the bolded bit, then a new section later in Article IV to address the additional seats. I think the place where section 8 used to be would do nicely. Maybe something like the following:
“In addition to the seats assigned to parties on the basis of election results, the Secretary of State shall assign one Cosa seat to any citizen who becomes eligible to vote after the most recent Election Deadline but before the dissolution of the Cosa, upon the request of such citizen. Any additional seat so assigned shall cease to exist should its holder vacate or be removed from the seat and shall not be subject to the procedures for filling vacancies in the Cosa, and shall also cease to exist upon the dissolution of the Cosa.”
Then add additional sentences as necessary to restrict voting on the VoC, or make the seats nonvoting/consultative. This is a bit wordier than the language suggested previously in this thread by Breneir, but I think the bits addressing vacancies are useful. I also think seats should only be granted to those who request them, not created automatically whenever anyone is naturalized (but I wouldn’t see any problem with informing immigrants of their right to request a seat as part of the routine welcoming process). Not everyone wants or should be expected to serve in the Cosa.