Hi There
I've had a look and can't see where this has been requested before, but if it has then apologies.
I like the function in some other apps to ride a 'manual' workout, where you just start riding with resistance set to 50% of FTP, with no pre-programmed workout, and have a slider bar or similar to allow you to either raise or lower the resistance as you ride.
This would allow me to do HR Zone training without needing to change gears, I could just raise or lower the FTP%, and you could ride as long or short as the moment took you without sticking to a time limit.
Something you might consider, or even have on the roadmap already?
Cheers
Mark