Given how little I've worked on LDView recently, it's unlikely I'll implement these things.
- Walk is already on my to-do list, but probably won't ever happen, unless someone else takes over LDView development.
- The movement in fly mode tries to adjust its speed based on how fast or slow the model draws. Obviously, it doesn't really work very well.
- Look in the LDView help file for the ZoomMax setting.
- I'm not sure what you mean by this.
- Seems reasonable, but not likely to be done by me.
- Also on my to-do list, also not likely to happen by me. Note that setting the camera field of view to 0.1 produces output that is very close to what a true orthographic mode would be. As a side note, you can effectively zoom in a lot further with this FOV.
- This would be straightforward, if I were working on LDView.