Thanks for taking the time to make this! A while ago I tried to play around with the Neck FX page and gave up because I couldn't get the right settings going.
Once I got used to it over a few laps judging my speed and grip became really intuitive and enjoyable. Outside of VR you can only really rely on force feedback and tire sound, plus experience with the car, and maybe a g-meter app. I spent about six hours hotlapping with various road and GT cars and, driving on the edge, I made way less mistakes than I normally do. I drove with the UI hidden most of the time (unless I wanted to check on tires or laptimes) and the difference in immersion and sense of speed is significant.
The only real issue is with Content Manager. Importing the settings doesn't just overwrite the Neck FX settings, but all CSP settings (which were returned to default). I don't mind going through all of my settings to get them back to where I want to but it's something to keep in mind. Maybe providing a screenshot of the settings in the mod description in addition to the settings file itself would be a good idea.