Hmm the root level check is a fine idea but I think funcom is loosing sight of some of it's original class vision. Crats have the best roots in the game. We have 2 in particular that are very good but they come at mid level. The first is a ql99 root greater restrict movement, it has a 50% resist rate. The second is a ql129 area root, greater mass illus paralisis, and this has a 65% resist.
The 2 class defining abilities of crats are charms and the best roots in the game.
I think it's essential you rework the crats high end root nanos to continue this line up to 185. No need to change existing roots, just add 2 more of each root and area root.
Greater Restrict movement II at ql 145
Greater Restrict movement III at ql 180
GMIP (greater mass Illus paral) II ql 150
GIMP III QL 185.
And that should do it. I think it was Funcom's original intention to make crats the one class that could actually root a raging enforcer, this will no longer be the case in the coming patch. I know Gaute has a lot of things on his head, thinking we had an 11% crit buff and all, so I just wanted to bring the small world of crats to your attention here and let you know that you may have strayed a bit from your design intentions.