Center chord symbols on their notes/chords
When you select a note, then press Ctrl+K to add a chord symbol with more than one character, the chord's 1st character stays centered on the note. This requires you to manually center each chord symbol you create. This is very time-consuming, especially since nudging with arrow keys isn't available yet (hint, hint).
Instead, please have MuseScore re-center the chord symbol as each character is added or removed. The one exception would be on the first or last note of a bar; in those cases, the chord symbol should not extend beyond the barline.