Well, whatever you call spirit, confidence, etc. The issue remains, that the design of the game naturally lowers spirit, and to a lesser extent confidence, yet offers no way to increase spirit or confidence other than items. Other stats like charisma, beauty, even constitution can be increased readily, if not slowly. So as a result, girls will tend to get worse at jobs that require spirit and confidence over time.
Now if you rework all the scripts, or fold in changes that others have made, neither of which is likely to be as simple as changing the jobs to slowly building up, it might work. After all, how many barmaids/waitresses, singers, etc. will work a year, and be significantly worse (less customers) than they started, yet get paid more?
One of the benefits of having girls grow better at serving customers over time is that as the number of girls necessary to meet demand in one area reduces, you can shift some up into the higher tiers.
Of course, it IS your baby, so you have the perogative to do what you want, I certainly have never been able to keep momentum going long enough on modding the game to be post worthy, so kudos to you on that acheivement.
