The scope would be there to uh... aim when it's ramming something

Also, the Thornatus does do a good job of looking old and rickety, which is fitting considering it was from before the war...
Without the 4 Blasters, the thornatus would look... wrong, for lack of better words. It solidifies it well.
Kaxium can 'stand' when split, because of the sizes of the oversized wheels.
Baranus' 'standing' point is littered with holes for rods to go through, allowed Sahmad to have a wide range of poses while in the Baranus itself. Also the colours work together better IRL because ofthe fact that the Gunmetal is there to represent Black. Without the Chariot, the Spikit still seems quite good, even with it, it's because of the fact that the Baranus V7 set comes in total with:
Orange
Black
Grey
Silver
Light Grey
Gunmetal
Metru Green
Lime Green
Gold (thornax)
All on the different parts of that, cuz there's three parts, one in each of Baranus' 3 bags.