A few months back, I submitted this request:
Now that Zwift has a workout mode, it’s more important than ever IMHO to implement such a feature, much like Trainerroad’s PowerMatch. Otherwise power numbers won’t mean that much, as trainer’s power is always different from power meter power, which is also used outside. If “Workout Mode” is to be a serious player, IMHO this feature needs to be implemented. If Zwift is telling me to hold 250watts for 1 minute, and sending a signal to my smart trainer to hold 250watts, that may be + or - 10-20 watts on my SRM meter, as they never agree. So it’s important to have it match. For general riding around, it’s not needed, but for “Workout Mode”, it is.