What are you even talking about? What was my original assertion and how has it changed?
I asked what about his system works at GT? Like I said in my last comment, just because other schools run a 4-2-5 doesn't mean they are running it the same way. So I'll ask again what school runs our system JUST like us? You still haven't answered my original comment either of what about his system will work at GT.
Normally when people avoid a question with another question or start making statements outside of the original question, it's because they don't know how to answer the question.
Sigh. No team runs any system the exact same way as any other team captain obvious. You posed your question poorly initially and that's why you didn't get the answer you were looking for.
As to questions, I find when someone says "honestly I want to know what you think about x,y,z" that person typically already has an established idea and is posing the question simply to draw out a statement they anticipate they will hear in order to attack same. That's what I perceived you were doing. So which one of us is being intellectually honest eh?
So to answer your question, about Roof, not "the system." If you have followed this thread you should recognize the answer many "Roof supporters" have already cited multiple times. More talent. Especially at the LOS.
We improved in several important facets on D. Primarily at the LOS, being able to hold ground better, actually prevent first downs in short yardage situations. This was mostly due to an improvement in talent and depth on the line. It created more of the 3rd down stops we have all been clamoring for.
Was it perfect? Absolutely not. Was it as good as we want. No. Was it improved in several facets? Yes. Again because imo the talent has improved. To the point we are a middle of the pack D rather than bottom qtr.
Was this predictable? Imo some of it was. I didn't predict a failure to create turnovers but I was optimistic that play at DT would be improved. I think it was. I was doubtful of our ability to get an effective pass rush though many others proclaimed success there would follow since we would "finally" be starting Simmons at DE. The pass rush I doubted never really materialized the way we needed it to. Especially against our tougher opponents.
But again the answer is and always will be more talent and depth. True for Roof or any other DC we might bring in.
Is it fair to postulate another DC could be more effective? Yes. Is it fair to postulate another DC would be less effective? Yes. Can you stipulate with any reasonableness that Roof would not be more effective if he had more talent on the field???