These are some ideas that have been flying around in my head. They mite work they might not they might sound crazy.. but tell me what you think.
Nanos:
MA's have a rudementary Run Buff (it kinda sucks but stacks with others), how about introducing a Run Speed Debuff that is very tempray 15 seconds or so which can be casted on an enemy - so that if you do break roots using the new items you can actually keep up with them/stop them going out of rnage before next root and do some damage?
Maybe some sort of Nano Nulltiy Sphere, once again very temporary, stops all incoming hostile nanos/or only roots and snares and gives a run speed boost - Could be smilar to Nullity thinking of time it lasts. Could have a line of these similar to Damage output buffs - Sunrise over pond etc getting better and lasting longer as they QL increases.
In accordance with the 50% crit reduction how about an agent style small temporay crit increase. Possibly something like +25% increase for 10 seconds can only be casted within a time limit, have a nano shutdown etc - Also could possibly be an item
"Mystic Dust of Divine Sight of Kali - When entering the nervous system of the Martial artist this item will enhance his/her vision in a way that helps identify areas of critical hit by a small amount. Using this clouds your mind for 20 seconds locking the Intelligence Ability thus render the casting of Nano Progrmas impossible during this time"
Misc Ideas
Give Mas GA (j/k ^_^)
Alot has already been mentioned
Just my 2 credits..