With the next power proliferation, Corrupters will end up with exactly he same powers as Defenders, including the longed for Psychic Blast.
Therefore, the only difference i see between them now is that one starts critting on a low target - Scourge - the other one starts getting an end discount and a 30prct dmg buff if he's in team, and someone in his team is taking damage.
Tbh i'd go for scourge any day on a Psy/Pain or Psy/Rad corr.
What do you guys think? Am i missing something or are they reducing blaster to the 2nd most useless AT after PBs?