More Play mode functions
MuseScore is a great tool for learning playing a music instrument or composing/arranging to get timings well.
For that, it would be great if you can switch on and off a track/voice/a whole line of bars when in play mode, so you can, for example, only play the treble clef or bass clef line.
Also, to be able to repeat only a short peace of music in an easy way by a shortcut.
By pressing a shortcut the player should jump to the starting point of the peace of music time and again.
(There is a walkaround for this, though not perfect.)