From what I understand, our struggles with red-zone scoring the past few seasons were directly coorelated to the rampant poor conditioning on the offensive line. We could not generate enough of a forward surge on the line to run the ball effectively. Utterly predictable and conservative playcalling inside the 20 made matters worse. There are plenty of teams who line up inside the 10 yard line, run the ball up the middle, and score fairly consistently - they just have the strength to dictate that sort of approach. If you're weak on the line, you've got to be more inventive to score inside the red zone, and for the most part we never were.
Just a side observation, but I've noticed that in the SEC, the teams that are very effective inside the red zone are the ones who really get creative with the passing game. They get the tight ends involved, they use all sorts of misdirection, they even try the occassional halfback or receiver pass. With the speed and athleticism found on most SEC defensive fronts, I think you almost have to adopt this sort of approach to be successful inside the zone. JMO. RTR.