Some ideas that come to mind:
- A desaturation slider for skin colors. It's a minor thing, but I think the green and blue tones in the game look too colorful for some of my purposes.
- A coffee skill, sort of. Maybe a general brewing skill modeled after mixology. Learn how to make weird lattes, exotic teas, and whatever Starbucks comes up with next. Make a coffee shop and moonlight as a barista for a day. I really just need an excuse to make a hipster coffee shop for my game, complete with cappuccinos, bubble tea, and an alternative looking barista overlooking things.
- The ability to save faces/eyes/etc. into the library of presets in the "basic" tabs in the Looks section of CAS. There are certain types of faces and eyes I use a lot, but they're ones I've created myself and I'm stuck having to recreate them all the time because I can't save them. This is especially frustrating when creating entire families, because the genetics tool in CAS is frustrating as all heck, and I often have a fixed idea of how I want any children to look and how they resemble each parent.
- More long skirts, and more long hairs (chest length and longer) for either gender. I love both a little too much.