The way they get children in this game is so outrageously dumb. Yikes.
The next game, should they choose to have children again, absolutely must have a significant time skip. One, because that would actually make sense, and two, because it'd be real fun to see what characters look like when they're older. That was one of the cooler parts of Radiant Dawn...although that wasn't a whole lot of time in between it and Path of Radiance.
Either way, ditch the children or figure something else better out. I also don't really like the fact that you stop getting new units at a certain point and then it's just all children from there on out, it annoyed me in Awakening too.