To be honest, I'm not convinced that significantly lowering the speed does much to slow the game down. I'm also not a fan of the way the tweaked rosters adversely affect Franchise mode. Lowering speed and quickness also lowers the overall rating - meaning guards are usually underrated.
There's only so much changing the ratings will accomplish. I only provide a tweaked version by request - in my experience, they only cause problems, since Franchise is the most popular mode, and if they were not popular with the community, I wouldn't provide them.
my last request Andrew, the dunking should be lower. I always get a 360 windmill or 360 behind the back true a zone defense.
Lowering the dunk rating will not change the style of dunks - changing DUNKPACK will. Unfortunately, that would mean everyone would be doing the same kind of dunks. As I said before, changing the ratings only goes so far in affecting gameplay. I could try a few things, but I wouldn't remain too optimistic about the results in 12 minute quarters.