[JaM]

1.Merkavas were never fitted with ERA armor. They had spaced plates, Mk3 has passive modular armor.
2.BAZ is acronym for Merkava Mk3 with improved Fire control.
3.Dor Dalet is uparmored Merkava Mk3 Baz
4.Merkava Mk4 can carry 4-6 men inside. They never really want carry infantry outside. It is suicide. every roud that hits a tank can kill all of them.
5.Merkavas needs their own class in game.Only front hull penetration could immobilize them (not rear hull), they carry troops inside, not outside, so they are allways under armor protection and will not take casaulties if tank is hit.(Gun APC class is not good due to upgrade problems, you will never be able to upgrade Merkava to other AFV, olny to APC and similar...)