Paul did a great job of recruiting kids who were "… athletic QBs a chance to play QB instead of moving to another position because other schools didn't want dual threat QBs …". Do I really have to name names here? (The most recent is, of course, Jordan Yates.) Tech got several of them and for the very reason you cite: they wanted to play QB and other schools wanted them as DBs or "athletes". What we had problems with was keeping the recruits healthy, usually from sheer bad luck. No doubt we would have liked to get, say, Daniel Jones; if I remember right, Paul did recruit him. But Tech did ok with exactly the scenario you say we faltered at because of timing. I agree that timing makes a difference, but if Paul had been recruiting in the "opti0n era" Tevin, Ratliff (oh, what could have been), JT, or, for that matter, Jordan Yates would never have come to Tech. It works both ways.
I've heard this argument before but … What, exactly, would coaches recruiting against Tech pick on if not the offensive system? It was unique. Players would have to spend a year or so learning what to do. Besides, Tech is hard! I don't think Paul could have stopped this if he had powers like Albus Dumbledore. It would spring up anyway and all Paul could do was keep winning - he usually did - and keep recruiting players who fit what he wanted to do.
Personally, I think Paul would have had a much better record at Tech if he hadn't lost Ratliff, Jordan, and Griffin to career ending injuries, or Dedrick, Marshall, Leggett, Klock, and Jones to transfer. It was, as you say, "… events out of GT and CPJ's control", but I'm not convinced that timing for the spread option had much to do with it. But opinions differ on this, to say the least.