I’d like one of two things to happen if the next FE game also has marriage mechanics. Either they go all out and have a kid dependent on what pairing you did (not on a father or mother), or cut the kids entirely and instead have a new skill given to the couple you put together (based on their support conversation or their personalities). Preferably the latter one to shake things up a bit.
i would add have the kid be saved for a post game campaign focused on them and your aged avatar















