Just like my old Optimus thread, I will be redoing Megatron in my style and How I would've liked to have seen him in the movie. The second movie really get him much closer to what I would have liked, I just think there are a few things megatron wouldn't need. 1) He's not going to hide, so keeping him cybertonian makes perfect sense.
2) he flies. he doesnt need a vehicle mode.3) needs a mode that allows him to concentrate his firepower. Alt and primary.
So heres what I came up with. He's a Stationary cybertonian turrent gun. Originally the treads on his feet were by his ribs, but I really loved the feet in the new movie so I changed it to reflect that.
*that little image of his turrent mode wont be in the final piece, thats just me working out his transformation