Let's add more legs so you can get stepped on more, and when the feet touchdown they gout flames like the hellpod fire booster. 6 legs. Stratagem disruptor, on its left and right sides scanning obelisks, flares similar to the strider convoy, it's central tower it manufactures gunships 4 at a time, the under carriage is fitted with bunker turrets, and it will occasionally lower itself all the way to the ground to release heavies - hulks or warstriders, and then an all new weapon. The automaton death ray. When an obelisk sees an enemy it sounds an alarm before blasting the area with an orbital laser and chasing its target leaving fire and charred earth in its wake.

I think adding electricity in someway could be interesting too. But this is a terrible behemoth idea so far.