Done some testing... I tested Granite and non-Granite builds on Brutes. It seems that the non-Granite build is more viable than on live. The Granite build barely changes, except for the jump.
The non-granite build is now a good option for a hasten-free build, whereas the Granite build still requires a rock-solid high recharge build to be viable.
Overall, it seems like the changes make Rock Armor similar to other armor sets in that the T9 is now basically there as a mule or something to place if you have an extra slot to fill.
I like that non-Granite builds are now more competitive with other armor sets, I am nor sure how I feel about Granite armor being basically an Oh S! power that is mostly useless. Geode is an interesting alternate power for Scrappers, although I probably won't take it either.
I really like the minimal effects options, although it does look a little hodgepodge if you are running all the toggles...