If this gets implemented, it should have its own unique coloring:
- [ ] MIDI piano key note-on flash <--- This already exists (see pic)
Your request:
- [ ] MIDI piano key note-on flash (for incoming notes)
So then it should end up being 2 different colors:
- [ ] MIDI piano key note-on flash (for incoming notes)
- [ ] MIDI piano key note-on flash (for existing notes)
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Regarding MIDI capabilities in REAPER, you really need to check out v4.51 if you haven't. It has received MAJOR MIDI updates. Honestly, and this is coming from someone who does gigantic orchestral MIDI arrangements with 4 loaded instances of Kontakt, REAPER's MIDI is pretty damned amazing now.