stemlet (stems over rests)
Musescore currently allows beams over rests, but I would like additional ability to toggle "stemlets" for these beamed rests, which are short stems that are connected to the beam but do not reach all the way to the rest (image from http://micrologus.retmusic.com/tag/stemlet/):
This helps out in rhtyhmically complex music such as odd time signatures (where the beaming helps to delinate the rhtyhmic subdivision) or heavy syncopation (where it may be hard to determine where each beat starts).
For ui, I would say need a checkbox setting in rest inspector for "stemlet". Some way to control globally would be nice (maybe setting template, xml, or ini). Maybe the beaming ui could be enhanced to allow controlling stemlets (in addition exposing option for beaming of rests), so that user doesn't have to manually set the beam properties for each rest.
Additionally, would need to ensure sloping of beams works properly when rests are involved. I notice that currently if I have a rest inside a group of notes connected by a beam, then layout currently forces the slope to be horizontal:
But in that case should be sloped (depending on the rules):