Just got a Taranis X9D, and the FANTASTIC FPV Freerider Reloaded.

I noticed on the calibration screen there is a lot of extra channels. Would it be possible to extend the current mechanism to allow for channels adjusting parameter settings?

For example: I would like to assign one of the side slider knobs to the camera tilt angle setting so I don't have to exit to the menu and adjust every time I want to change the view.

But I can imagine other more experienced pilots would like to modify other parameters, say with toggle switch ranges or something.

Glad you like it!

While that would be possible, I don't want to go down that road. There are so many different types of controllers, with different 2-way/3-way switches/knobs etc. I can foresee that it will cause a lot of headache for people. There is already sort of a way to do it though - you can map the keyboard shortcuts to a button/switch on your transmitter with a program such as this:

http://joytokey.net/en/