TBH, I couldn't see there being more oneshots for that one. The fact that they're married and Clark never left precludes the idea that Luthor would ever get the crystals so that's not a problem and the uni is very similar to LS in terms of five years hence (i.e. the oneshots Post LS/pre-Heirs) so one could plausibly cover for the other except changing the names for the twins so I'm not sure what you could come up with. I think you tied that uni up in a little bow (unless you decide to add MORE to their brood).