Currently, the autocompletion in the "Download Route" dialog box is the only mechanism by which old addresses can be recalled. There might be a better mechanism in the future, but for now, that's all there is. And it's not horrible, it usually only takes a couple characters before your entry is displayed as an auto-completion option. Unfortunately, though, you have to use the up/down/select hardware buttons; you can't use the stylus to select an auto-completion option. That's out of my hands - it might be a bug in maemo.

It sounds easy enough, but simply reversing a route--while it may be enough to get you home--will screw up a lot of the direction information. For example, in cities, a reverse route will have you going the wrong way on one-way roads, or on the wrong side of a medianed road. Plus, all the text directions (i.e. "Turn left on Main Street. Go 0.5 miles.") will be completely wrong.

So you have to download a new route; there's no getting around it. You just have to remember to download it (in addition to the non-reversed route) before you leave. You can always save each of the routes as a separate GPX file and load them as you need them.

Suggestions are always appreciated!