For now, most people don't want to dedicate their char to Entropy because it's non-competitive PK-wise and most who are left in CF are powergamers or at the very least want to have fun in PK, not be a punching bag. For pure roleplayers even something like Tribunal is better as it allows them to mush it out in relative safety, not to mention the inn. The appeal of Entropy is very narrow, hence why you don't see people in it. I've tried twice and it isn't working for me, mainly due to the lack of powers. I bet I can even make conjie work in Entropy, but it's not worth the effort.

TLDR: Even Shaapa will RP if forced to do so, but Entropy doesn't give an incentive to try.