How about a export feature of the GPX file information .... but in a different format ... plain text, CSV or formats that can then easily be imported into a separate spreadsheet (Excel, or Numbers).
Why would this be useful ? well the customer could then use that data and customise the spreadsheet to calculate OFFLINE navigational information as a management tool. Data like From/To waypoint names, Mag Bearing, Distance, time, height, etc and make estimates of the times taken on each section of the walk and therefor overall times etc.
I have used this very successfully with GeoLives Editor exported GPX files, but I had the overhead of converting GPX into a CSV and then taking control of Excel. However the results added so much more value to the product and route creation and planning ! One could then format the layout of the sheet to whatever suited you and then print or share as a field backup guide.
Hey, you could even provide a basic Excel template, and get people sharing additional templates? There are many people very competent with creating spreadsheets.
However the key asset it adds is it allows the user more control to customise, format the presentation in a way that adds value to a walk, bike, ski journey, whatever.
I know that in previous products attempt were may to create route plans, however they were simply poor attempts and failed to address issues with detail and clarity which is needed if you in the mountains and a gale is blowing. Best to let the user customise that who has the practical experience.