Fair enough, all valid points
It was just a suggestion. But i can see that you put some thought into the selection (other than space)
I do quite like the idea of adding the mortar to the design. The added flexibility makes the vehicle more valuable.
I have seen specs on the vehicles you mentioned. Damned useful for scouting, and rapid movement to support infantry. In general a mortar of any size is pretty effective against infantry and unarmored vehicles.
about the only reason I would up-gun would be to deal with structures, and dug in positions..but if it's mostly for impromptu fire support, or missile team suppression, 60mm is a good choice
the big ones can really rearrange real estate.....My uncle had scars from a house that was relocated by a heavy Russian mortar at one pint..not shrapnel from the shell, bits of the house that got hit.
o the other hand my nephew had a chance to see a smaler weapon in action when his construction unit came under fire from an Iraqi technical..a 12.7 mm machine gun on a Toyota pickup...
a "dinky" ( by artillery standards)40mm grenade launcher reduced the truck and its crew to bits...Ive seen the pics..I will never doubt what a long burst from any automatic mortar or GL can do again.