Hi, I'm new to the forum.
I know I'm getting this idea in early, but I hae some suggestions for some new Transformers for Transformers 3.
If Micheal gets this idea know, he could work it into number 3.
After watching 'Transformers', I bought the full American Animated Series cartoon box set, and a company called Madman has released the Japanese exclusive series, 'Headmasters' & 'Masterforce'.
If you know Transformers, ignore the US comic & Series 4 interpretation of 'Headmasters', the Japanese 'Headmaster' is much cooler, a Headmaster is a Transformer that can Tranform into a big head (and vehicle) that combines with a 'Transector', basically a giant lifeless robot, to become a Supersized robot. This would fit into the films since Micheal wants Transformers sizes to suit thier vehicle.
here are some reference pages -
I have suggested this because Fortress Maximus would be an awesome compatriot for Optimus Prime & we could have a proper 'Scorponok' character.
Also if Soundwave is in Number 2, than the Autobots better thier answer to him with 'Blaster'.