Chords playback and rhythmic slash notation
When there is rhythmic slash notation (in voice 1), as well as chords symbols, it would be nice if there was an option (and possibly have it be the default) making it so that the playback duration & rhythm of the chords would be based on the slash notes. You can sort of achieve it manually by putting invisible chord marks over each slash note, but that's tedious. If you have a single chord mark over an entire bar, and rhythmic slash notation, there's a pretty clear interpretation.