I would assume the blasts would not be "full". Only the blaster has full blats, everyone else has a nerfed one. AKA the blaster powers are much weaker for non blasters. I would assume this would be the same. As for the controller powers, that might be an issue but other AT have controller powers which are weaker, aka dominators. I am not looking at a 10 /10 blaster / controller, but more like a 7/7 version which is inline with everything else.
The could simply do a mechanic where the weaker ( as in less hit points) the enemies are the stronger your control is.