Update- ~~NEW IDEA~~ Also, with the idea of megatron not returning, they could discover a decepticon "legacy" he left behind, like an invention or something, that was a work in progress, that could cause the autobots and humans to be defeated. Then, the new deceptcions could try to continue the invention...(is dark energon considered? cause i never saw TFPrime). and it could leave a cliffhanger on TF4 into TF5. does anyone like that idea? Okay, so many of you are sad that in a Transformers 4, your favorite dcons wont be returning because they're dead. Well, ofcourse they'll have to bring in a new main villain. I'm not familiar with these dcons but some of you are saying Unicron and others. There's many possible ideas for this because the brand and the TF lore is so huge, there's so many characters and myths to explore in a continuing trilogy. But what if they showed flashbacks of the dead dcons (back before the first movie) to explain the plot in the fourth. Because all of these movies have to deal with the problems that arose on the final days on Cybertron during the war. So what if they showed flashbacks, with the new villains and new characters you wanted. and someone said they should use dark energon in TF4. dont really know what that is, cause i dont watch prime, but sounds cool If you have anything really cool to suggest, post it here.