Findlay was the first real big bog school in NWOhio to run the spread under Cliff Hite IMO. They spread the ball around well and were the first team to really utilize the "bubble" screen game. Is what they did not do was have designed run plays for their QB, but who can blame them when they had guys like Roethlisberger and Johann at the helm. Since then, guys like Mayzes, Boles, Rios, and Palka established a power run attack from the spread with the ability to pass fairly easily when needed. Kregel, Brungard, and Dempsey have all adapted something similar. Perrysburg under Kregel did a really good job of using an HB and moving him all over the place (TE, slot, wing, off-set FB) as an extra blocker in order to create mismatches in the run game. Central was still running I formation through 2010. Dempsey is no dummy, he caught on a copied the system, even pulling good assistants from some of these aforementioned teams. The spread systems simply prevent teams from loading the box like you can against a winged-T team and when you add the QB to the playbook you can create some serious imbalance and mismatches.
Is what they all did/do very well is run the QB. Some more than others but it causes fits for a defense to have to account for 6 instead of 5 in the run game.
Football will never change and if you want to win ball games you have to establish the run. I do not care if it is the winged-T or the spread, you must run the ball in order to win.