So you're wanting WIS to code in some philosophical based, Jimmy V style "don't give up, don't ever give up", type of logic to where a kid will always be fine with whatever PT he's getting? Or where he'll always take that as a challenge to work harder and stay in the gym longer to try and improve faster so he can have his "put me in, coach!" moment?
So you basically want a player's WE to improve if he isn't getting minutes so that he'll improve and then get the minutes he wants. In which case it'd make sense for a starter averaging 20+ min/game to become complacent and have a WE drop - but then we'd just be replacing these posts with people barking about how it makes no sense for a starter's WE to drop.
Damned if you do, damned if you don't kind of scenario.