I got away from football for a while with the regular season ending, so I haven't posted in a while (not that I posted a bunch anyway). As one of the few Oregon fans on here obviously I'm completely biased!! But it's interesting reading the discussion here and seeing the difference in football philosophies. As a football fan in general, I don't want to see every team playing the same way. I like that some teams have the "smashmouth" identity, others have the speed, others have some combo of the two. Trends ebb and flow over time, and what's "cool" now will likely be adapted to. For all we know 10 years from now no one will have the HUNH, but some variation of an older style.
As a fan from another conference far away, it's interesting to see that you guys are actually talking about some of the same stuff we are, in a way - as in, do our teams need to make major changes in our defensive philosophy, or the personnel we recruit, etc. With back to back Stanford losses some UO fans are wondering if we need some major changes in our defense. But I think your style is as part of your identity as O's spread/speed/etc. are part of our identity. Both of our teams probably need to evolve, adjust, and continue to adapt with the game. Clearly what Alabama's done has worked well, with back to back titles, and very few slip-ups, and while Oregon has been good lately we still have a ways to go in my opinion.
I think any scheme has at least a couple weaknesses that can be overcome by good enough teams. Part of what makes my yellow-and-green fun for me to watch, is also what can cause us problems. To do well, our O-line has to block well, protect the QB, and the D needs to get the opponent off the field quickly to give our offense chances to get into a rhythm. As some here have said, our D has to be in excellent shape since if the offense scores quickly, they're on the field a lot more. It can leave our quarterbacks vulnerable. As such, the pro style has its own rare weaknesses if the opposing team is good enough to take advantage of them. So yeah. Football is fun! And I am learning a lot and have a lot to learn.