Did you hear the latest news from Freefly (as of last week or so?), via Instagram Live? With the upcoming Firmware version 2, they found a way to get roll to work with Movi Controller, and if you mount the Movi 90-degrees forward, so that the Pan motor would control the Roll axis, you can do infinite Rolls while the other two motors control pan and tilt. It seems this was a huge software challenge, harder than it appears. I think you need the Movi Controller in order to take advantage of it. Unfortunately, I can't link to the video as it's disappeared from Instagram now.