The Ferdinand also lacked a turret so the entire 65 ton vehicle had to be repositioned to line up another shot.
That doesn’t seem like a good idea.
I wonder what Ferdinand Porsche was thinking with that design?
The Ferdinands were made from the chassis of Porsche’s failed Tiger 1 proposal. It was more a stopgap measure taking advantage of existing stocks. Many of the German tank destroyers and self-propelled artillery pieces were cobbled together from old Panzer 3, 4 and 38 (Skoda) chassis as well as captured French tank chassis.
That and the fact that basically the crew was blind inside the tank. The Russians, who never lacked for reckless courage could sneak of on the thing and plant magnetic mines on it.