Hey, we appreciate your feedback dearly.
Your first 2 points are fair and we already noticed them, sadly just didn't have time to fix them. We will get back to them after the jam tho.
As for the zommage, i don't know if you noticed, but there actually is the possibility to zoom with ctrl + mouse wheel :D, we tried to explain it using the notes to the left of the chessboard, maybe it wasn't portrait clearly enough tho.
Ty for your detailed feedback <3