So I just tested this and running at >> (Speed 2) non-stop, it takes almost (like damn near exact) 7 min to go 24h (I used a stopwatch). That being said:
One Year = 42 hours IRL
Coming of age (16 years) = 28 days IRL
Now remember, this is at speed 2 NON-STOP, as in no breaks to building, no breaks for battles, nothing. Just full speed. If one of the devs know the difference in time passage, I could do the math and figure out the other two speeds as well.
After looking at these numbers, I’m actually still for children, but not in the way you’d think. In The Sims (the first one) and Fallout 4, there are children, and they never grow up. That being said, they still have responsibilies such as school, and can still help in VERY miner ways around where they live.
Transitioning that to Stonehearth, there’s another voxel based game that EXTREMELY simular to Stonehearth that actually had children. I just can’t find the damn thing now. A carpenter would build a crib, then two people would come next to the crib and a stork would come flying in, delivering a baby to the crib. This could work with the raiting system too, as there was a whole kids movie done about this.
As for them growing up, 3 SH years would be roughly a week of non-stop playing, so we’ll say 2 weeks IRL for a heavy gamer. During this time they’d be nothing more than decoration (for lack of a better term), but at the end of those 3 years, they become a kid (as they did in Sims 1). As a kid, we could make schools for them, or use them for light labor, such as hauling things. Maybe a little farming if you feel like it, but nothing like any of the major classes. If for whatever reason someone plays the full 16 years, then they become an adult, but with all their learning, should be able to immediantly become a high level of whatever class they studied. The transition between the ages could be the same animation that’s used to change classes that we have now.
So make them always run away no matter their courage, as well as make them untargatable by the enemy. Even if the whole town is slaughtered, we can at least assume that Ogo has a hearth enough to just orphin the kids and not kill them.