I agree with this. I didn't care for the Driller at all. Maybe if it had combined with Shockwave, I would have.
I thought the Driller and the carriers with mini ships came from another alien invasion movie... Like Skyline or Battle LA, where they had VERY similar concepts. Both had almost nothing to do with Cybertronian lore.... Though I do remember seeing Cybertronian worms of a sort in WFC.