Prolong the content? Directly address congestion issues head on? Provide a quick way to earn EP almost effortless rather than party for hours? Eliminate merc possibilty?
The right question would be why add the steal shenanigans instead of a daily entry KI accumulation system.
A good reason to send people in the field would be to emphasis exemplar points parties, along the lines of if they are already out there some will stay for EP.
However, as been mentioned already the optimal setup for stealing is
a mix of THF, COR main/sub COR/THF. The need to steal your own entry item + increased chance of steal success at low mob HP + beeing able to steal multiple boxes from the same Imp as someone reported, pretty much dictates holding the mob at < 25% HP and go 5 x
THF/COR or vice versa COR/THF and maybe one healer/THF for cures and sleep.
At this point I can't leave this up to karma anymore. Needles and voodoo dolls guys, like the knitting sized ones.