I've been using Servant Salamander for years now and I really do like the moment someone looks me over the shoulder and is astonished by the speed and accessibility of AS. Everyone I know uses the Windows Explorer

However there is one thing in Gnome Commander which inspired me. In the directory tree, you can use Enter to dive into a directory / folder and backspace to move one level higher.
But additionally it is possible to do this by pressing the left and right keys. Right to enter a directory and left to leave it. In my experience, this makes navigation even faster (you only need one hand at one place). And those keys aren't being used by default in navigation for something else. So, it would be really nice if you could add those to keys to navigation.
Thanks,
Tobias