Some of the supports actually feature character development (not backstory-- development), including cross-generational development. That's nice. Roughly half the characters seem pretty meh or annoying at present, though.
Speaking of cross-generational...
Of course you're a comrade, and you're also the daughter of my close friend.
And that's why you shouldn't be on the verge of knocking boots with her, MyUnit. Man, what a thrill-inducing pickup line that is, too. I don't think I'd mind nearly as much if it weren't the self-insert speaking... or if said self-insert weren't the only "Gen 1" character able to breed with "Gen 2" which seems like making deliberate exceptions for maximum fan-person gratification.
I am tickled by the fact that MyUnit can marry Anna and have a little time-traveling Markette with her. I plan on using that MU pairing, I think. It fits my views of canon.
Hypothesis: I'm guessing that "Mark" (that's MyUnit's little moonbat child) ends up in Elibe with amnesia after a time-portal mishap. I think I'd actually like to see some FE7 'fic with FE13!Mark's characterization-- seriously, the kid is a space cadet.