The walk navigation mode is super handy for exploring archivis scenes from a human perspective. Being able to set view height and jump height can add a lot of flexibility to the use cases for this navigation mode. However, the gravity is hard coded in meters. I have all of my scenes scaled to inches in order to accommodate a CAD ---> Blender workflow. Unfortunately, this makes my gravitation acceleration 9.8 inches per second^2, and while it is cool feeling like a spaceman, It makes it difficult to navigate scenes, especially when there are stairs involved.
Exposing the gravity settings in UI, or (better yet) using the current scenes gravity would make this a much more useable feature.