Very insightful post, I want to try to beta too.
Sapien is for news mostly from what I understand and over there all votes are equal like in Reddit. There is also a replacement for Stackoverflow to be launched - Kleos. The barrier to join is what counts, onboarding non-technical people to Steemit is a bit difficult, these new platforms better make it easier.
In any case, these are exciting times indeed!
RE: Steemit or Sapien? Why not both!!