Strumming notation for harp (or any other string-plucked instrument)

Your idea

I propose to slightly expand the options of the existing notation in the sense that the arrows pointing to the direction of strumming can be automatically positioned above the notes, as they should in this case.

And for unmeasured strumming, there should be a tremolo sign across the stem and an arrows above the chord:

Problem to be solved

This way of notation will save space horizontally. Moreover, currently in Musescore it is not possible to put two arrows (indicating strumming) up and down (with each other) in front of a chord at the same time. You can add either only up or only down.

Prior art

No response

Additional context

No response