First off, i know its a bit early to even think about a fourth movie, i mean the third one just barely came out! I think that they should make a fourth movie, as a continuation of the series, not a reboot. Ive come up w/ some solutions to some of the problems.
1. There are no villians! megatron is dead, and lots of the decepticons were killed!
2. we've had enough of bumblebee, lets get some new characters!
3. Michael bay and Shia LaBouf not returning.
4.We don't need another transformers movie.
Well, for the first problem. early on during filming of tf3 i read that there was supposed to be time travel used in the plot. Well, maybe they could use that for tf4. Say a decepticon wants to bring back megatron, but there is no way he knows to do that. well some how he gets a hold of a time travel device and goes back in time to try and save megatron the multiple times he is killed, and then the whole movie could involve the autobots moving through time in a sort of race to stop the decepticons from doing this. What could be cool about doing time travel is that they could use the g1 designs for the transformers if they went to the eighties or if the time travel got screwed up they could end up going back to the time of the dinosaurs where they discover the exsistance of dinobots. (add on if you have additional ideas!)
2.(and part of 3) they could just have him in for a couple of minutes where him and sam witwicky are chillin in old age somewhere in the country, along w/ carly. They could also bring in a lot of other transformers, such as (and be warned, i don't know many g-1 transformers as i am a fairly recent fan) hotrod, rodimus, (ok thats all i can think of, sorry!
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3. to heck w/ michael bay!( i hate him and the screenwriters for killing of arcee!) a new director would be to the high benifit of tf.
4. we can always use another transformers movie!
thanks for reading my post, im new so i would appreciate it if you told me how im doing! thanks again.
PS - Also i forgot to mention... they could also put arcee in this one! along w/ jolt and possibly the twins, but idk, they were kind of annoying.