The only ZOE game I liked was the GBA game..
And putting the cockpit there makes sense. Its more shielded and protected from enemy fire than most mecha, which make it all nice easy to destroy headshots, or in the main body, which as anyone who has ever fired a gun would know, is going to take a LOT of fire since its the center of mass and MUCH easier to hit.
Crotch cockpits would work better. Aiming for it means if you miss you are probably gonna miss hitting the machine entirely unless the thing is moving "downwards" from you, and the legs provide extra cover, increasing pilot survivability. Most likely, the mechs are gonna be destroyed from upper body damage, giving the highly trained pilot a chance to escape the burning wreck and come back to fight another day...