I generate step data (currently just local to the watch) and TCX files, either with just GPS data from the watch or with BLE heart rate strap data.

Maps and workout journals are all I'm personally looking for, and I get those by emailing TCX files to <username>@smashrunimport.com.

Getting reliable GPS antenna performance is my current focus, though.

I'm honestly not sure what your customers' customers are using it for.