Usergrid ( https://apigee.com/usergrid https://apigee.com/usergrid ) addresses at least some of what you're looking for. If you try it, let me know, as I'm part

Usergrid ( https://apigee.com/usergrid https://apigee.com/usergrid ) addresses at least some of what you're looking for. If you try it, let me know, as I'm part of that team that's working on it.