People have mentioned a lot of good ideas...
Nails
More piercings
Turn on/turn off’s
Zodiac
I like the idea of being able to create a ....pregnant sim too!
White hair for elders was a good idea too.
I think what I would like to see most though would be a SEWING MACHINE , both an old fashioned one and a modern one. I would like there to be a color wheel and patterns similar to what they had for cats and dogs. With patchwork, dots, leopard and tiger patterns, plaids and others types of patterns, maybe some we could create ourselves...... several different types of outdfits, pants, shirts, shirt or blouses with jackets, different types of dresses, shirts, and blouses, swimsuits, sleepwear, hats toys(stuffed animals).
And how about a new object that could create jewelry?