Hi great piece. Just some thoughts.
Y love quartal harmony but sometimes it seems too much, and it sounds ancient.
My favorite part is A perhaps because it has more countermelodies. In general the piece, although has those countermelodies here and there, has not a contrapuntal essence. That's why it sounds lie a fanfare and the section "molto staccato" is a bit unconnected, since the feeling is "pastorale".
The engraving is good, apart from a few collapses, as it has been told, and the sound very fine.
It reminds me of some Shostkovich's passages.