I tend to agree with you.
It's a game.
Normally increasing the carry capacity is what we do if it doesn't stretch things too far and changing the squad size causes other problems
The game has limitations.
One limitation is the entire squad has to fit into a transport unlike "reality" where it's a simple matter of putting 6 guys in one truck and 7 in another and away you go. In the game, you cannot split a squad so occasionally carry capacity gets a tweak to accommodate game play
However, you may have noticed that simply increasing carry capacity or other simple expedients to gameplay like this sets some members of the "reality at all costs" crowd hearts all aflutter and we get links to websites "proving" vehicle such-and-such could only carry 11 troops.
I'll put this on the list and look at it in the fall
Don