Another idea would be to make sure the lines are always drawn _behind_
the boxes.
but then you wouldn't know if there's one line connected from the top box
to the bottom, or the same line activating all boxes.
the only clear solution would be patch cables with corners a la max. the
one I use sometimes is putting everything vertical, and then jump the
bottom element to the left. not 45deg cables, but enough so everything is
clear.
João