I would love to see the following new characters...
Autobots
Wheeljack (white, customized 2010 Ford Mustang or Saab Aero X)
Hot Rod/Rodimus (red 2010 Chevy Monte Carlo)
Cliffjumper (exact same red Camaro w/white and black stripes like the '07 movie's toy)
Inferno (firetruck)
Breakaway (same jet as the
ROTF figure)
Sunstreaker (2010 Aston Martin.....never heard of the name but it's a very nice car)
More Sideswipe
More Jolt
Decepticons
Soundwave coming to Earth (go from satellite to Chevy Silverado, as seen in concept art)
Lazerbeak (about the size of a bald eagle but still capable of unleashing hell)
Rumble (a bit taller than the average human; more bulkier and badass than Frenzy)
Shockwave (Apache helicopter, as seen in the '07 video game)
Thundercracker and Ramjet (both F-16 fighter jets; them and Starscream stay grouped together throughout the movie, unleashing havock)
Jetstorm (after hearing about Jetfire's death, he too joins the Autobots in honor)
Bruticus (I have no idea what they could transform into)
Things I'd love to see...
*Bumblebee talking throughout the whole movie
*Soundwave getting revenge on Bumblebee for killing Ravage
*Starscream, Thundercracker, and Ramjet kidnap Sam
*Sideswipe, Sunstreaker, Bumblebee, Jolt, and Ironhide take on Bruticus in an abandoned junkyard, industrial plant....any other setting that would look epic
*Optimus Prime and Megatron have a long and epic battle; then the Autobots fighting Bruticus call in....they're having difficulty and he's too tough for them. Megatron, having his ass handed to him, hears the conversation and offers to help; he knows Bruticus's weak points.
*Optimus and Megatron arrive to the Autobots' aid, where Prime and Megatron give the final blow to Bruticus
*Megatron suddenly leaves and can't believe he just helped out the Autobots
Okay....these may sound very stupid but nevertheless, I think they'd be cool.