"5’ 2” A long story" Topic

There has been a long simmering "disagreement" between us authors of our rules on the definition (if required) of a low vehicle.
The issue is, that should a very low vehicle be very hard to hit by an anti-tank weapon firing a solid round. The is anecdotal evidence that British Universal Carriers (which are open topped) were hard to hit due to their very low profile 1.57m (5' 2"). So if we were to decide there was a category for a low vehicle what would it be, we decided that 5ft 2 inches or below would be the decision point; with a qualifier that this did not cover the height of the crew operating the vehicle or very small items like Roll Bars on modern "jeeps" and the like or whip type aerials.
The reason it applies to only to firing anti -tank guns firing solid shot is that they have limited chance of hitting the crew, in our rules). Machine guns and auto cannons firing at the crew (reminder the vehicle is open topped) have a significantly higher chance of hitting crew due to multiple round firing at the vehicle as the lighter weapons have only a limited chance of penetration the armour at range.
Modern at least tank guns can fire rounds such as HESH and HE that do not need a direct hit to affect light vehicles, so may not suffer that limitation.
As an aside it does make the WW2 Dingo armoured car a hard target as it does not class as open topped, depending on circumstances it may count as unbuttoned as there was a tendency to leave the top hatch cover open or remove it as in the event of hitting a mine the crew was killed by the physically hitting the hatch cover. Its armour thickness is sufficient to make penetration by even Heavy machine guns difficult in the front arc; making it excellent for reconnaissance tasks; bit of an aside but it gives some insight to the rule writers thinking.
I am sure there are those that consider this too detailed for their games but that is a personal opinion. I would be interested in folk's opinion of the underlying logic and if it has any logical flaws. Plus is anybody aware of an armoured vehicle lower than a Dingo 4 ft 11"?

Shows even a "perfect" set of rules has room for improvement.