I love to hear that 
, I of course use the app throughout the entire year, creating and sending workouts to my Garmin mostly during the summer, and then when I can’t get outside it’s easy to open up the app on my phone and train indoors. Of course a lot of people only use these apps during the winter or “indoor months” but as more people see and more functionalities are added, it will be able to reach that goal.
I wonder if you use the “FR” as free ride on the Zwift files, and the same “FR” as this “Free Ride” on Garmin – and other devices as they support it. Then keep “OE” as an “open-ended” interval (click “lap” to move on). Regarding this feature-request: Multiple "Types" depending on device , you could then make a “OE, FR” that would be an open-ended free-ride on Garmin devices – ride at any pace until you click lap button to move on – with other devices as they allow