Excellent thoughts!
If Pop is insistent on getting more touches and minutes for Mason, something I believe is necessary too, he should start by cutting down on Finley's minutes.
Sure Hill isn't the shooter that Mason is, but Hill's ability to breakdown defenses, get into the paint, and pressure the ball defensively, are sorely needed when Parker is on the bench. Of course, the kid is going to make mistakes, but I see no point in castrating him by cutting down his minutes, taking away his ballhandling duties.
By the way, this change has been coming for some time now. When Manu was healthy, Pop was beginning to entrust primary ballhandling responsibilities to Ginobilii and not Hill, when they were paired together. It simply doesn't make any logical, basketball sense. Besides, Mason is more useful as a spot-up shooter, than the primary backup PG.
The Spurs have already tried to trade Hill once, so as much as Pop raved about his abilities when drafted, I just wonder how much Pop truly values this kid and if Hill will survive Pop's notorious, confidence-killing, mind games. To me, it's all an exercise in futility. I wish he'd simply go with the rookie and live with the results. The only was Hill is going to fully develop is with consistent playing time and learning from his mistakes.