One axis zoom (or stretch).

So, I usually work with buildings and skycrapers, and one thing that would make the work a lot easier would be the ability to zoom the viewport on an axis, for example, instead of having 1x = 1y = 1z dimension, have the ability to zoom to get (for example) 1x = 1x =4z. This is useful with long meshes, removing the need to pan through the mesh or zooming out just to realized that the mesh becames too thin.

The photo in this post shows how you'll see the mesh after the zoom stretching (but with the grid scaled too).