I mean, I would love more teenager gameplay, but I honestly don't think it's bad, at least not if you have parenthood. To me, the trick is to play your teenagers as teenagers, even though they can do the same things as adults. My teenagers tease their siblings, insult family members when they are in a bad mood and sometimes stay up playing video games very late, unless an adult comes in and tells them to get to bed. In the few cases where some sims have looked to adult (like being too muscular or too curvy), I've changed that in cas and changed it back once their YA. And like someone mentioned, shorter teens would mean less clothes. I personally haven't gotten taller since I was like 12, and when I worked with teens, a lot of them were as tall as me, and I'm pretty average. It's not unrealistic that a 14-year old would be about the same height that they would be as an adult.