Sure. However you want to work it.
I can tell you how it turns out. I became less than interested in one of my worlds because I think it's 'tarding itself up. Because of that, I forgot about a semi-prospect who I had de-activated due to fatigue. He'll pitch 30-35% less than his historical numbers. He didn't improve at all over the last couple of cycles. Maybe, because he's a 4 year pro, he's pretty much done. Maybe, because he was inactive during the progression cycles, he didn't improve. Or, more likely, he didn't improve because he didn't pitch his max numbers. At least that's my experience.
But, hey, if playing time doesn't matter, developing players should be easy and no one should ***** about minor league results.