- Keep all of the surviving Autobots and Decepticons and bring them back. New ones can still be introduced and changed out on the fly. It would also help with consistency and change up the dynamics a bit more. For example maybe Prime wants Crosshairs to go on a mission to hunt down Galvatron. So they swap him out with Red Alert.
What could make it fun is maybe they have a slight rivalry and it shows with the digs towards each other before Drift leaves for awhile. When he returns, Red Alert heads back out into the field helping humans. This could freshen up both sides while giving plausible explanations for their absence. At least until the next movie.
- Prime destroys the Creators at the beginning of the movie. But in turn it finally brings on the arrival of Unicron. Unicron in turn helps the Decepticons gain a foot hold on Earth by reviving dead ones into new forms, and giving supplies to them as he heads towards Earth. This will be crushing on the Autobots. However by the end of the movie Galvatron and some Decepticons realize Unicron is their enemy too is only out for himself and has been using them. By the end of the movie signs will be there of a temporary alliance for the 6th movie.
Remember, Cybertron is destroyed from the events of ROF. Earth is now the Decepticons home as well. Any threat against it is also a threat against them. Prime and Galvatron now have a shared threat. As Unicron, at the bidding of the Creators before their demise, is now set out to destroy Earth and all on it.
- Introduce the Sharkticons and allow Scorn to swim to take them on and the other Dinobots to attack from land and air. (He's a Spinosaurus, he can.) Yes...we need some water based Transformers and the Sharkiticons could be considered a water threat now. With the Decepticons covering land, air, and sea as well. Could be a nice Jaws throwback too.
It doesn't have to be a big scene, but something where Scorn eventually comes in and has some lunch. The other Dinobots help as well.
- Bumblebee needs to be crippled like in the first movie. IMO he's gotten too strong. Hell, Primes taken more of a butt whooping than him. This will allow the others to shine a bit more too.
- Simply things. The problem is, I liked AOE. While some stuff was WTF, I understood much of it and 'got it'. But it's also obvious some of the public didn't. Many aren't aware of the deep Transformers mythos and thus it needs to be dumbed down and simplified a bit so they better understand what's going on and aren't quite as confused walking out after the movie. And if things are gonna happen, they need a short explanation rather than for them to use their imaginations. It could go a long way.
- Less swearing. Even as an adult, I found much of it misplaced and unnecessary.
- Less useless dialogue between characters.
I could go on and on. And much of it is ideas and stuff I think would be interesting to see in some capacity.
But right now the 3 main things that need to be looked at first:
1. How tight the writing is. Keep it fast moving, understandable, and with a good sense of flow. Clean up some of the problems quickly from the last movie through the dialogue. It would in turn improve the movie and help give people an "I get it now!" moment.
2. Shorten it by about 20 minutes.
3. And go with the last 2 recommendations above about less swearing and less useless dialogue that seems more like filler. It should have a purpose. Focus.
So now the big Q. Will Bay be back?
I can understand him not wanting to. For many reasons. But it is my sincere hope he does. His movie making style has given then movies their own style and look and feel. I guess I'd be happy if he was at least a producer. I'd rather see the next movie say, "A Michael Bay Film", rather than, "Produced by Michael Bay".