Gun mounts:
These seem like good options:
25mm Ring Rail For Tactical Flashlight
Tactical Picatinny/Weaver Rail Mount for Flashlight with Quick Release
Pressure/remote switch:
I think we are probably looking to achieve two things with the remote switch.
One is a good switch with a large, silent, easy to press momentary button with a separate smaller easy to press on/off button.
These switches on AliExpress seems good:
Wurkkos TF84 SF84 Tail Remote Switch (Does anyone know if this works with the C8+?)
The other is a switch that will be able to handle high current led’s without loss of current.
This is beyond my knowledge. Funtastic, I have read the thread you have linked, it seems like this option is already being pursued. This thread also contains information.
Driver:
100% only (default)
75% only
50% only
35%, 50%, 75%, 100%, Batt check (Or whatever low, medium, high % would make the most sense)
Strobe only
Programming:
20+ taps enter programming mode
1st buzz, nothing
2nd buzz, memory on/off
3rd buzz, programming modes
I am no expert on this, suggestions would be appreciated.
Other Changes:
Double springs to absorb recoil, will probably help with high current as well (Thanks Funtastic).