Personally how I feel.
Seems like a waste of a life stage. Not to mention more work to put into them and having to add clothing for them as well. Feel like it could easily be a easily forgotten life stage with half hearted work into it. LOT of work to be putting into a lifestage that players probably won't even play for that long because young sims are always limited to things they can do. (Already not enough hobbies for sims, especially younger sims).
Took forever for teens to be feeling more like teens until Parent Hood and High School Years came out. At base game they're pretty uninteresting. Same with children.
Definitely need more resources funneled into things still needed for the base game than another life stage.