Battlesuits makes nanos cost more by shielding from the outside, it makes sense that it would be harder to cast hostile nanos on someone in a battlesuit?
Atleast that would make a B-suit a little bit more attractive than currently. With a bit of added nano-resist, people would scratch their heads more than now figuring out wether its worth it or not. Might even be useful on some of the new uniqe bosses?
/Jereziah