Did some tests tonight on rolls, and it SEEMS like works as it should. But the three of us were on vent together and we all noticed it and we then started to do "tests" by rolling all greed or all DE on green drops. Logically three of anything will pretty much override everything but need and we started to notice who the enchanter was and had feelings he was controlling it by voting DE/greed on things.
At the end when the epic showed up (abysss crystal) we rigged it so two of us rolled DE and one would withhold their vote until after the other two voted. Sure enough one voted greed and the other voted DE as we suspected, so we rolled need simply to deny him a free abyss crystal.
I will probably have to get a text color addon or something so I can more easily read the logs. I'm still convinced it is there though, because if an enchanter doesn't know about it they will simply vote DE and nothing will look odd. But we did all see and read in our respective logs four DE votes and one greed vote and the item when to the guy who rolled greed several times.