DJI Naza Mount - completely modular (Use 1 Naza for multiple copters)

Hey Guys,
I don't want to buy a new NAZA M lite + GPS for my new Copter, so I decided to print out a completely modular system for these components.
The target is to find a solution, where I just need a minute to change the flight controller to the other copter.
I'd like to share my current version with you, but I'm sure I will make some improvements in the future.
The distance between the holes are 45mm, so it's the standard distance for e.g. 50mmx50mm centerplates or something.
This