Seeing how the list can get so very long with skills, it might be good if they divide it in sub divisions in sims 5 though sims 4 could get it in an update.
Would require some thought in how to categorise them all best though and how many categories would be needed to truly cover everything in a fitting way.
This would also allow sims to be better at one of these categories through their traits or at a specific one.
Could also be neat if on top of traits determining the modifier, if you could pick one skill your sim is talented at, and one they are bad at.
The talented skill would allow you to let a sim ignore any penalties from traits so offers a work around, and could give a stronger boost in skill gain of that particular skill than any trait does.
But the skill they are bad at, which must be chosen for every sim, is something they can't learn at all.
And that system could also play into rewards, wishing wells and other special objects which could curse a sim to be bad at everything or more than one skill, or be talented at more than one skill or everything.
