Originally Posted by AVEITWITHJAMON
^I dont know, I think the 4th movie needs to be its own thing, have a totally seperate villain/s like Thunderwing or Straxus. Have a teaser maybe at the end of TF4 showing Megatron being rebuilt into Galvatron.
THEN build up Unicron through movie 5 and reveal him in movie 6 as the big bad.
Personally, I wouldn't have killed off Shockwave in 3. He's been shown to be every bit as much of a villain as Megatron in other Transformer mediums. They could have introduced Ultra Magnus in 4 as the leader of a group of autobot survivors, and Shockwave as a leader of a decepticon army. Shockwave heads to Earth after losing contact with Megatron, and is the villain for 1 movie.
I wonder if they do end up bringing in Galvatron, if they'll give him Cyclonus, and Scourge as minions. Given that all of Megatron's top soldiers died, they need to fill some empty spaces, not just Megatron's.