In pro tools ( best midi? Very good for midi scoring etc) the midi editor shows midi track choices in a list starting from the upper left of the editor window. With each having a box to check to view or not. And colors can be set, different to enable view per each.
It seems like a small thing maybe,
But it is always an extra click and drag first to get the roll off the black bar then click the blue added note removed.
So I would suggest: make quick double click on the black looper only piano roll and not add the note.