In a similar vein to the power bar/dot it would be nice if the cadence display could change colour depending on the current cadence.
Would probably need to know either cadence I’m aiming for as an target and then could be green in range, bright green for well above, yellow and red for under.
Would be nice cadence drills and long term cadence increases.
I’ll pass on the feature request! 
Yeah. Some other platforms specify various cadences during a workout, notably Wahoo Systm, and indicate where you are with respect to the target. I like that as it adds another element to the workout that makes it a little more interesting. Wahoo also indicates when to sit or stand during some workouts. I like that too.