1) The entire admin experience is SSL only. Our pricing grid references SSL but that's primarily for private communities (our widgets all support SSL environments)
2) We'd love to get SSO in the hands of as many people as possible but the support costs on it are quite high. I'm happy to work with people on this point.
3) We have design customization (check out http://foodily.uservoice.com/) and more is on the way.
We put a bunch of videos on http://uservoice.com/fullservice did you see those? Or were you looking for a demo of a live account?