@sebastian but honestly, those are very good ideas.
I was also thinking about HR wheel when it’s locked to certain zone. Normally HR wheel segment is highlighted when in current HR zone but it highlights only the locked
(pre selected) zone if in HR zone lock.
So let’s say that I want to run in Z3 only - the interface could lit up Z2 in green (speed up) if I’m too low or Z4 in red if I’m too fast.
The HR wheel is ideal for this as it’s always visible on regular screens.
This way the “slow down” and “speed up” notifications could be fired up less often (for example if the trend is constant for longer).