These are awesome. Just one thing, maybe if the gatecrasher's blade rotated the other way, which would actually help it move forward, caus at the moment it would directly oppose forward motion when I'm contact with the ground. Cool name by the way
front limbs end in hands for scaling fortifications and ripping them apart
bucket wheel excavator (like harvester) for destroying walls.
retracting claws for manoeuvring over defences
jet booster for added force
two separately controlled Gatling guns for dealing with troublesome units...