This is the very first Sims DLC that I bought because all of them felt so pointless, and I must say that I was positively surprised.
I am more into grinding than roleplay, and I absolutely hate travelling. (because it obstructs grinding)
The DLC adds one new skill and a corresponding aspiration. But most importantly, it adds five new values that young sims can try to max out until they become adults. This is really good in three ways:
+ Before, teenager was just the useless life stage where you try to get the best grade in school and couldn't make babies. Now, there is an actual 'skill' that you can try to max.
+ Maxing these skills is fun. E.g. for manners, you can try to introduce yourself to everyone you run across, constantly brush your teeth or make sure the table is set up all the time.
+ Adults now get a bonus for interacting with children. Before, you were incentivised to push all teaching and parenting to neighbors instead of family members.