I just added title extraction to the output, when present.
I do dream of being able to automatically generate fingerings for complex harmonic arrangements. The model is actually able to do so, but the input is the hard part.
Taking input from ABC means recreating a lot of the timing logic from abc2midi, which would be a pain.
Taking input from MIDI means losing the looping structure of the score, and being stuck with whatever chord rendering abc2midi picked.