I have suggestion for improving driver profile.
I think that separate control settings for each driver profile would be a good idea.

The problem is when several people on the same computer using different controllers, ie mouse, keyboard, game pad, steering wheel.

I agree. However, you can sort-of solve this by creating script files that each set up a specific controller configuration. Once someone else starts playing he can open the chat window and enter "//scriptname" (scriptname obviously replaced with the name of the script file, without extension) to run this script and load his controller configuration.