Merkava weapons

[gingertanker]

ok this is a little petty i know...
in real life Merkava tanks are armed thus:
Mk1,2,3-
105mm/120mm main gun
3X 7.62FN-MAG(commander, loader, coaxial)
1X 12.7 M2 HMG(Coaxial above the gun)
1X 60mm mortar
Mk4-
105mm/120mm main gun
2X 7.62FN-MAG(commander, coaxial)
1X 12.7 M2 HMG(Coaxial above the gun)
1X 60mm mortar

now, I realize that there are and will always be 4 weapon slots. the tactical usage of the 60mm mortar can hardly be depicted in the game(since tanks cant fire with no LOS, or am i wrong?). However the 0.5 certiely is avilable...so, wouldent it be better to put the loaderand gunner MGs in one slot(2X7.62 FN-AAMG) and clear a slot for the 12.7mm?
In the Mk 4 definetly there should be no 3rd 7.62 as it dose not exist.