I totally get the need for Pre-teens (I would love them too) but expanding on teens needs to be a bigger priority. Otherwise it will feel like a "sticking plaster" ignoring the fundamental issues we have with teens.
I think teens need an overhaul which goes beyond the height thing. There needs to be differences in speeds between the needs bars ie hygiene, social and fun could go down quicker. Give teen sims acne! Options to sneak out, whims to argue with parents and "That is SO UNFAIR" moodlets. I think the deva should look at toddlers and how their needs are shaped around being a toddler. Teens should be shaped in a similar way to differentiate the gameplay from adult/elder sims.