I would love swimming to be a skill of its own, perhaps like dancing one with only 5 levels? I would also love to see more specialised "fitness" skills - like soccer skill, skating (not hidden, but active) and so on.
But more than that, I want skills to be more expanded in general. Gourmet cooking shouldn't be able to be built until you've mastered cooking. Rocket science should require logic (at least to some degree). Why isn't reading a skill? With research (as its own separate skill) a dependant on reading skill? Debate should be connected to charisma. After writing we could have academic writing (good for journalists) and creative writing (for authors).
In general I just want more separate skills, but also more skills that connect to each other and are developed as you get older - so that not every skill you might ever need in your career or life can be mastered in the scope of 3-4 weeks of university. Also cooking and parenting skills are WAY too easy to get. Normal, every day, interactions with your kids or cooking family meals should never get you past 5, after that it should require more of an effort (classes, books, programs on tv...)
