I have put the Gaussian's proc in Invincibility so it would have 10 chances to go off. I have seen it stack three times. I have also seen it forget theat it is slotted for a while.
I think defenders have a better return on -end powers. When I ran mine against Chernobog, I was surprised when he ran from me and stopped attacking. He would throw out his little dark ranged attack, but that is much better than being smashed in the face with masonry.
Yes, I could. However radiation is one of the best resistance armor sets to pair with the crash that comes with SS since I would not be depending on defense.
My problem with radiation is that I have a Hulk type of character with radiation armor. The gets it's power from radiation, but does not emit radiation. I can't play the character until I can fully turn off any obvious radiation effects