It would be really useful if we could represent our topography meshes/models as 'Extruded Contours':

Other CAD programs I have used have this option and it is very useful. Especially when you want a clearer understanding of the exact variations and heights in the terrain (which can be rather hard to determine with the current smoothed triangulation representation). This method of representing the topography gives a clearer view, especially if one can customize the size intervals of the contours to be represented.