Allow export selection

MuseScore currently allows to "save selection", but it does not allow to "export selection". It would be very nice to have this option.
Some examples where this option would be very handy:

1) Export a passage to .MID in order to open it in a sequencer (such as Sekaiju) to rapidly test things that MuseScore won't allow (as of current 3.0.5 version), for instance a crescendo in single note from a wind or string instrument or any other unsupported control change.
2) Export a passage as .MP3 or .WAV without having to spend too much time to export the full score and then trim out unintended parts using a third part application.
3) Export a passage as PDF to share some excerpt (but not the full score) with someone else.

Currently you can save the selection as .mscz, open it and export it as the required format, which are too many steps.