I have the zine (and really liked it as an AU, and was glad to see you posted it here as Parts 1 and 2.
Part 3 was a delightful surprise—having not read this before! Some very angsty moments, but a satisfying ending as all your stories. While I can certainly postulate how a Part 4 could go (children growing up, meeting up with other ‘outcasts’ and ‘free-thinkers’), and then there’s the ‘big machinations’ of the leaders inside the domes… So many possibilities!