I wholeheartedly agree with this point, my only quibble is I'd vote going to 8 game regular season instead of pushing Week 1 up to Week 0, especially with Summer baseball in Iowa. I think pushing the season up discourages multi-sport participation, if you play baseball & qualify for the state tournament, you might actually have no summer break - straight from baseball into football camp.
Every team has a certain level of ramp-up and improvement, but certainly some teams have more focus & ability to improve through the season. Just like Newell Fonda - they proved it on the field.
Just as an example, say you have an "equal" district with 3 top teams, and Team C loses on the road by 1 score to Teams A & B in the 1st 2 games of the district season. Team C continuously improves through the year while Teams A & B have been running the same Wing T offense since they were 6 years old and don't really have as high of a ceiling to improve to, Team C should have the opportunity to prove how far they've come in the playoffs.
We've seen this type of situation plenty of times before - I wonder what percentage of state champions have 1 loss? 2 losses? More? With 16 teams, you will pretty much guarantee that you'll exclude a couple of 2 loss teams, and historically, those teams have proven that they have the ability to make a run.