His role is backup center, defensive anchor of the second unit, and primary post threat of that unit. He plays virtually every minute that Tim Duncan is on the bench. He has developed superb chemistry with other members of that unit, in particular Bonner and Green. To my eyes, he has flourished in this clearly defined role. As Duncan's backup, Tiago's minutes will vary as Tim's minutes vary, but the role is clearly defined.
I can't control what you infer, but I intended no such implication.
Let me be as clear as possible. Tiago has never played much more than 200 minutes per month in his career. At 21mpg, he's already at about 350. At 25mpg, it's about 400. 30mpg puts him at roughly 500. I have no idea at what point he might hit a wall or become more susceptible to some sort of stress injury.
What is certain is that adding additional minutes increases risk. Even if he's perfectly fit and never suffers a groin strain or a hamstring injury, the additional minutes carry additional risks of landing on someone's foot or taking a knee in the thigh. Even a minor injury can cost 6, 8, or 10 games.
So, I'd have to be convinced that there was sufficient potential benefit to cover the additional risk. "He deserves it" doesn't cut it for me.
I agree that the Spurs will need something like 30mpg from Tiago in the playoffs. I'm not sure of the best way to get him there. I do know that they finish the season playing 25 games in 42 days, including 8 games in the final 11 days. I'm sure playing 30 mpg in every game down the stretch isn't the way.
This is the primary problem with the subject that timvp raised. At present, the Spurs have at least one defensive anchor/rim protector on the court for every single meaningful minute. Starting Tim and Tiago together means significant minutes every game with no defensive anchor. Plus, there will be some growing pains as Tim and Tiago learn to play together.
In the short term, the team's performance will probably suffer. It will be up to Pop to decide if the long term benefits are worth the price. I believe they will be, but I don't see it as a sure thing.