Good post DomePatrol.
I support quite a few of those proposed changes. I agree with the Steelers (for once, as I'm a Bengals fan) that the playoff overtime rules should apply to the regular season. It makes no sense to have different OT rules for different games. Plus, as we saw in the Pittsburgh-Denver playoff game, it can be more exciting when you know a player has to run for a touchdown for the win.
One thing that I often argue for is the changing of holding penalties for both sides of the ball. If the NFL really wants to encourage the offensive production, holding for the offense should be divided into 5 and 10 (maybe 15?) yards, depending on the severity of the hold. I would like to see the same division for defensive holding, as an automatic first down for holding (as it is now) is ridiculous in many cases.