There are several noteheads commonly used for percussion notation that are missing from 2.2 and not currently included in 3.0.
MuseScore composers must currently provide a workaround with alternate noteheads. This not only limits potential compatibility for import/export of scores between other applications that use widely adopted percussion notation standards (VDL specifically), performers must be provided explicit instruction in individual scores in order to be able to accurately interpret the composer's intent.
Missing noteheads place an unnecessary burden on both the composer and the performer.
Adding the following noteheads will enable percussion scores to be notated in MuseScore with the same noteheads as any other editor and allows full-compatibility with noteheads in the VDL standard:
|SMuFL Name||SmuFL Unicode||3.0||Link|
Reference: Sibelius VDL Template 6.0 (PDF)