Interesting - we have a small team but it's already a pain adding everyone's keys to each server and rotation would be a pain.
My first concern is - how does this work? If you are generating new keys, does that mean you could SSH into my servers if you were compromised?
Looks nice, at least for on-premises deployment of service. Will there be source available for client?
We are just announcing today[1], and I'm one of the co-founders, and happy to answer anyone's questions about ScaleFT
[1] - http://venturebeat.com/2015/05/11/scaleft-launches-with-800k...