I know the topic of children in the game has come up in the past and generally been turned down on account of the models needed not being there and the ones available being terrible in the past.
However I've been helping Hallgarth with the Skyrim Child Overhaul mod recently which adds mer children as well as orc children, and I thought of you.
we're working on a version with a lot of fixes currently (so that it doesnt interfere with hearthfires or the unofficial patches anymore).
I know Hallgarth put out a call looking for any help from people, specifically he'd been looking for voice actors as we need an orc child voice, and a mer child voice would be nice too.
He's freely said he's not really a texture artist, but the ones he has are better quality than vanilla skyrim, the models he made fit in very nicely with the base game and dont look out of place, so perhaps this might be the mod you've been waiting for before seriously considering adding children to skywind - especially as the models have proper morphs, look like actual children (unlike most other mods to date), and add variety to the various human subraces as well as orcs, bosmer, altmer and of course dunmer.
If any of you have questions, suggestions or want to help, perhaps on the understanding that the resources could be shared, do let me know.