Yes, I know this is old, but nothing has changed yet.
Another possibility would be to remember the last viewed location and zoom level in a cookie.
But the main thing for me is the ease or difficulty of getting around. In most mapping programs, if I'm looking, say, at New York and I want to look at California, I use the mouse wheel to scroll way out, then scroll back in. That doesn't work on travelmapping unless you turn off "Always Update Visible Routes", because when you zoom way out, there is so much data to download that it hangs. I think that there should be a zoom level above which it refuses to download anything, so that all you can do is move around. Indeed, if the only purpose of that checkbox is to allow you to zoom way out, then it could be removed.