Because vanilla Generals isn't good enough for you. Realism overhauls and graphical enhancements are the main points of existence of this mod. If you want tons of new units, this is not the mod for you.
Minor details: It fires only one mini-gun (as expected). The other one will just be chilling on the opposite side since the gunner is too lazy to get in the turret.
Two guns are very buggy and by that I mean very buggy.
The doors animation works only in rappelling command.
Blackhawk comes with 8 Rangers inside.