Thanks for the answer,
It is really good to hear. I am actually working at the UCL (Belgian university) in partnership with the MIT (MIT Seed Fund) on a heavy load, autonomous, multicopter project, and there is not yet a robust enough ros architecture to fly autonomously. The hardware architecture which I chose last year in my thesis as being the most efficient and able to do heavy computation for video computing is just the same as yours : the Odroid XU4 under ROS indigo and the PixHawk on a custom 70kg payload drone. We developed a very similar software architecture but yet much less complete.
As Flyt will continue its way, I will port our project on FlytOS. If we buy more copters, I will propose to buy FlytPods instead of PixHawk/Odroid/Wifi module, because it is much more integrated.
A last question : Does FlyPod uses eMMC or SD cards ?