I think this is a brilliant idea. Speaking from someone who has a significant disability and can't press the jump button on my controllers it would be great if I could press it on the keyboard. When I 1st got my oculus touch controllers I cried because I couldn't figure out how to make my hands work with them but I did get it figured out but it's still pretty difficult It would be great to have options on the keyboard. This is not just for VR chat but virtual reality in general needs to be more accessible to people with disabilities.