Ability to set articulated (e.g. staccato) playback without using the equivalent notation
It is common in orchestral literature that, if articulations (e. g. staccato) are applied on notes in several following measures, only the first few measures are written with this articulation, followed by the term "sim." . This means that the musician should continue to play articulated notes. This method leads to increased readability.
For MuseScore, it would be nice to have a feature telling the synthesizer to play notes as staccato (or whatever) notes, even if they are not marked as such. This would allow to use the above notation method and still listen to the "true" (intended) sound.