GT,
a guy that needs and wants a tall sight is not using it to "restore" to the original outline or appearance. They want it to shoot to point of am, so IMO, it is ok for the sight blade to be different in profile.
One can't have it both ways, original height= original appearance; shoot to point of aim= taller sight and slightly different apearance. JMHO.
What did the Germans do? They were targeting for 100 meters( and minute of man
) IIRC; so it was less of an "issue".