So if I'm reading you right, you've basically surmised that lack of shot blocking is a major problem, if not the major problem, for the Spurs defensive slippage in recent years. Despite this, you'd rather they continue to not only play, but start Blair, than find out if a guy like Turiaf can help them without destroying the offense? Or you just think Pop wouldn't go this route?
I'm really not concerned about the offense. I have confidence that Pop and the big three would figure it out and make it work. Maybe it regresses some if they start Splitter or go with Turiaf, but if the trade off is a significant improvement defensively, I'd do it in a second. But if it doesn't work out, they can always go back to Blair. Yeah, maybe mentally they lose him in the process, but that's a risk they should be willing to take.