VaS (and B5) do have the advantage of being quick to learn and play :)
I was working on a VaS mod some time ago but got stuck with some major problems.
Scale:
I did try to solve this with some sort of nonlinear scale. For example: 1NM = 1inch, 10NM = 10 inch, 50NM = 24 inch, 150NM = 40inch...