Whilst a lower profile is nearly always nice, providing that you don't compromise the other attributes of the vehicle to achieve it, was the Sherman really all that overly tall? I have a picture someone posted on another site of it head on alongside several other German tanks, and possibly a British one but couldn't say for certain, and they all seem to be of a roughly similar height. I think the Sherman picked up the reputation of being too tall via a combination of being taller than some of the earlier models during the war and its height/width ratio giving a visual impression.