I put 0%, though I probably should have put 1-5, lightning could always strike and everything comes together - but imo it is likely to be a once in a generation event.
CFB has moved largely to a different model than it used to be and there are probably only about a dozen schools nationally that can compete on any consistent basis for NC's.
I'd say it was easier for GT to win a NC in 1990 than it would be to do that now.
The money and resource proposition is just so different now.
Right now we are sub .500 against P5 opponents over the last 9 seasons, so I think we would have to start by at least winning better than 50% of our games against P5 opponents since we are going to play at least 9 per year. Our winning percentage against P5 opponents has gone down for the last 3 coaches - O'leary was 57.3%, Gailey was 52.9%, Johnson was 52.1%.