There are more options than some people believe for villains in TF3 IMO, everyone is spouting Unicron but I believe he needs to be saved for later movies because how the hell do you raise the stakes once Unicron has come along? Basically, you cant, so i believe there are other routes to go like Thunderwing and Bludgeon or Nova Prime and Jhiaxus. Thunderwing would be great to see, in fact an adaptation of Stormbringer would be perfect for TF3 for me, showing flashbacks of the Autobots and Decepticons fighting side-by-side during Thunderwings first rising after those experiments on himself, and then his dreaded return which strikes fear into Optimus Prime and The Wreckers, he would significantly raise the stakes from The Fallen for me. As would Nova Prime and Jhiaxus, now, the story of a fallen Prime mybe a bit similar to TF2 but I believe they could make it work. Nova Prime was corrupted by death rather than power and Jhiaxus was obviously evil from the start with his experiments on other TF's. Arcee had a big role in this arc in the comics so maybe this would be her movie to shine, Galvatron was also in this arc as a seperate character to Megatron and thats something else that could work in a movie IMO. There other options as well, and they will be in the poll, so vote away people!