What I think and what I hope for, asside from the obvious survivors: Autobots: Rodimus.
Bumblebee should take a back seat to let that new kid on the block appear and grow. He'll start off as a immature teen in the first movie only to end up being a glorious leader in the 3rd movie.Bulkhead.
With Ironhide gone, we need a big muscle-guy. Bulkhead should be as fun and adorable as he was in animated and as he is in Prime.
Time for that old G1 favorite to finally make a comeback.Powerglide.
The autobots could use some air support.Arcee.
She should come back as a reformatted car for crying out loud! Decepticons: Galvatron.
Somehow, Megs survived and some mysterious power reformated him and made him more powerful. He should be a triple changer. Robot, tank, and cybertronian spaceship.Starscream.
Another one who come back to life by that same power. His ghost is transferd to a new body where he take a more classic form.Lugnut.
Big and strong loyal idiot with his punch-of-kill-everything!Airachnid.
She's awesome on Prime. She can be awesome in the movies too. And Arcee need her nemesis.NEUTRALSDoubledaler.
That awesome character had such a tiny role in the past. I would like a modern update of him. And I would SO like a voyager Movie toy of him!Unicron.
Yes, you all wish that HE would be the mysterious power that bring back Megs as Galvatron. That villain would be hinted at in the first movie of the new trilogy, will be revealed in the second, only to be fully glorious in the final movie.MAKE IT HAPPEN!