That's not what I'm saying at all. Again, it feels like my point is missed. It's not just about Martin. It's about everyone around him too. The Spurs' plays, like pretty much all basketball plays, have options built into them. I listed some of them in my last post. Those options mean that no lineup runs anything other than set plays the same. Even then, set plays are usually tailored to certain personnel, so they don't really count as exceptions. Those options, along with scouting reports, change how opponents defend the Spurs at any given moment. Against Parker, the other team might hedge. Against Mills, the other team might go over the screen. Against Miller, the other team will probably just go under. Who's the weakside spot-up guy determines how much help comes from there, which affects the next decision by the Spurs, the next set of options.
Yes, you have certain rules, like cut-throughs perimeter players have to make, certain screens at the start of sets. But even they aren't the same. A Mills cut-through is more dangerous than a Green cut-through, which is usually only a formality. A West screen is more effective than a Butler screen. Diaw having the ball ready for a hand-off with the guard is actually him in a triple-threat position, whereas for Duncan it would probably just be the hand-off. It goes on, and on and on.
The Spurs can totally have a Martin package that makes him effective. But that doesn't happen in a vacuum. The question is going to be if those system changes have negative effects on the other guys on the floor, and if the net benefit is positive. It's much easier (in my opinion) to see him doing that when he's allowed to play his game in a smaller role than it is for him to do it as a spot-up guy.