how about some sort of omegaverse plot where an omega somehow bonds with two alphas. repopulation. Gotta come back down to earth and repopulate. People are matche dup based on tests and things they did up on the arc in space, but … turns out my dude matches with both of your alphas, which is rare but the higher ups see this as an even better opportunity for more children to be made. so they all live together in a bigger house than everyone else since they are a throuple instead of a couple