Awesome app (althogh the latest version segfaults every now and then but it's in extras-devel so..), looks very promising! One suggestion: Highway mode. I've been looking for this feature in a lot of N900 GPS apps but to no avail. Here's an example:



The main thing is that you'd set a course between waypoints and the app would display a line and tell you both visually and numerally how far off course you are. This is very useful when navigating at sea where you set a specific course and need to stay within - say - 1 nm of the course. So a beep/alarm when you hit a specified distance off course would be great. Do this and I will insta-donate!