Hi! I would like to share my new accomplishment for cool FPV control.
Made a USB to RC (PPM or Crossfire) black box with head tracker input. Just connect your USB flight sim HOTAS, a PPM head tracker and your radios trainer port (PPM) to the box and you are up and running 
Flight Modes, RTL, ARM, etc can be selected using the HOTAS buttons.
USB2RC box in action USB2RC FPV RC HOTAS FLIGHT - UNCUT - YouTube
Loved it!
Can you share more information about your setup?
Regards,
Hi Eder: RC Groups - View Single Post - FPV HOTAS with INAV and DJI Goggles
It will work with most USB HID devices, outputs PPM for your RC trainer port or direct CRSF for an external module. Work still in progress.
Where are you based?
I’m from São Paulo, Brazil.
As soon it will be ready, I will post a complete guide with links.
Are you planning on releasing a guide anytime in the future? I’d really love to make one myself
Yeah, I’m thinking to release it as Open Source, so anyone could add new features. What do you think?