I found a way to make a "kind of" Midi Retrig. I used the arpeggiator.
SPD: To your taste
Inconvenient: Retrig time values are set by SPD. They are not free as we can have on Audio Tracks Retrigs
Advantage: In real time recording, it will retrig from you push the button and until you release it. If I'm not wrong this cannont be done on Retrigs on Audio Tracks
Of course, as ND2 sounds are tunable, you can put RNGE to you taste to make arps with perc sounds.