Yeah, really looks nice!
Can't wait too for the link and more info about de OTA bootloader.
I'm making some industrial opensources sensor based on MySensor and my current bootloader don't have an OTA Bootloader. So it would be greate with your Bootloader and your application!

I'm designing my own mysensors casing... 3D models are finished... I'm waiting to resolve some details like the screws,... and I will print it in 3D and make some mold in resin... I'll post some picture when it'll be finished if you want...