Hi Wes - thanks for your kind feedback about the site. Glad you're enjoying using it.
Thanks for the suggestion. Hopefully it shouldn't be a problem if you forget to save a route you've started plotting, as when you next visit the route planer it should ask you if you want to reload your unsaved route.
Firstly, thank you for a fantastic site/app, only just discovered it, and it's fast becoming my favourite.
A feature that would be very useful to me would be a warning that I am about to accidentally leave my unsaved, edited route. Even though it is currently providing me with lots of practise, I am sure that, despite how easy and intuitive the editing process is, that my carelessness will soon grow tiresome.