Crazy:
I'm not sure at what level traits stop being handed out every 5 levels, but I think the longer you play, a woman would quickly get too powerful over time. Added to that would be a new trait every five levels (and afaik that could be 4 new traits as they stop being added after lvl 20?) adding more stat bonuses that are built upon every level. You'd see women becoming goddesses in any game that went past a certain game time. I liked this idea but I think it too is maybe too generous in building up a woman.
PP:
I guess this addresses some of the issues above, I think as long as maybe traits were spread as much as reason would allow among the stats (eg long legs, instead of beauty, boost agility? Might be stretch that one but you see my point?), you could avoid overcharging a particular stat, and undercharging others, that could possibly also benefit from a slightly raised input into job performance (raise the profile of the other stats when they overlap, eg agility should trump charisma in stripping, solely for introducing a more balanced stat set)
Keeping stat bonuses from traits down to a reasonable minimum, and rewarding the accumulation of traits (you'd need a good amount of traits to see say a 10-20+ bonus in any one stat) would encourage the player to find ways of obtaining them, be it in the clinic (surgery), items, or even just letting women live long enough (basic care & safety) to level enough to gain traits over time. It'd optionally give the player a reason to either improve the quality of their women (smaller, more specialized brothels/bars/whatever the player is aiming for) or go for quantity (the player wants more women in general/likes being a Walmart of whores ect).
Job performance boosting traits should (for balancing purposes) as well be tweaked to give slight bonuses only, and by only listing what stat a trait improves, you can have players 'customizing' a woman for a job, and the issue of doubling up on both should therefore hopefully provide reasonable but not overpowering incomes.
Of course a player can just kit out a woman to easily get a quick boost, or not and just have the traits that naturally flow from time build them up (set & forget). You'd optimally hope players embrace this new complexity, but really they shouldn't be penalized too harshly if they don't want to 'follow this path' from what's been outlined, unless there's a flaw we aren't aware of?