The humans rebuilt Megatron into Galvatron. They built a clone of Bumblebee. I thought they could have taken Starscream's corpse and maybe re-engineered him into a new body. With a new name: Skywarp, Thundercracker... one of his Seeker mates. It would have been cool perhaps. It would have been a great homage to Starscream's immortality and his Seekers. But AOE gives us the Nemesis Prime and the Nemesis Bee, which perhaps makes sense for now.