I arrange music for a group of friends. We have harps, flutes, recorders and guitar. One day we were playing an Irish tune which was 96% eighth notes, and a harper said, "You've gotta have a quarter note once in a while so I can look at my strings!"

So I started melding 8th notes in dance tunes into longer notes, for harpers and so wind players can breathe.

Other things I do:

Remove pointless accidentals. Some accidentals are important, some are not.

Change flat keys to sharp keys.

Raise key for flutes, which don't like to play low.

If it seems to make no difference, I alter stepwise notes so they go better with guitar (or harp) accompaniment.

It makes the music more fun to play.