I would so love it if during the 3rd movie, at some point, Megatron, in robot or tank mode, while preparing an energon blast that greatly reduces his reserves, sends out appendiges that dig deap into the ground in order to give him stability.
Something like: "Megatron fights Optimus to the point of pushing him down on the ground. Takes a couple of steps back, digs his feet into the ground while saying something terrifyingly cool <Join them in extinction!!> then, after 2 seconds of powering up, shoots a blast that trembles the ground as it brings a Skyscraper down on OP."
How cool would that be, right?