So, right off the bat, this thing is odd. It's hard to use and overly clunky. However, I was wondering if there are any ideas on using this thing that aren't widespread.
Two of the 'casters I immediately thought of were eGoreshade and Terminus.
Under eGoreshade's Phantom Hunter, the Psycho Venom attack becomes more useful with the Corruptor's Sludge Cannon.
Additionally, under Terminus' feat and Ravager, every time the Corruptor kills infantry Terminus not only gains souls but can be healed for d3.
eDeneghra and Marked for Death is kinda cool, helps with the terrible RAT and ignoring LoS is also kinda awesome.