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.
Alternative icy plane textures. This will be available with the new beta for you to choose. (Texture 1, Texture2, Original)
Also, I'll include the long forgotten update similar to this one; the water textures: Moddb.com