Per-note transposition
Currently in LibreArp, if an input triad is C-E-G, the pattern editor's 1, 2 and 3 lanes play C, E and G, respectively. However, if a note in lane 2 of the pattern editor could be set to (and labeled) "-1", then the incoming chord would be arpeggiated as C-Eb-G - changing it from a major to minor chord.
Like the proposed velocity enhancements for v2.0, transposition should be done on a per note basis. This would allow a single input chord to generate complete musical phrases and progressions.
If future velocity settings might be set by scrolling the mousewheel while hovering above a pattern editor note, perhaps transposition could be done the same way - but while holding a modifier key like SHIFT or CTRL.
Thanks again for considering features like this.