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.
Vanilla model with some little details I added which I'm satisfied with.
Visually, two more deploying legs and a couple of poles at the back (I have no idea what it's called)
In game visual, some steam while reloading, appeared at the back and some alarming lights while deploying at the front. (Just try to imagine it :P)