Barricade was definitely meant to have been taken down by Optimus Prime. After Prime decapitates Brawl/Devastator, he's still very much on edge and poised for an attack. It's setup for a fight between Prime and Barricade. But then the scene abruptly cuts and we don't see any more of Prime until he eventually shows up later on to fight Megatron. Barricade is never seen again after he shows up just before Prime and Brawl/Devastator fight. My guess is that the effects for the fight between Barricade and Prime were not finished and they simply chose to cut out the scene entirely. Maybe we'll see a slightly extended cut on home video that restores the fight (I'm sure they've made enough money to warrant the expense of finishing the effects for a fight sequence) and corrected subtitles form when Brawl incorrectly identifies himself as Devastator.

Also, the bit on Wikipedia regarding Starscream is correct. After he attacks the F-22's, the pilots maneuver too well for him to take them all out and they're quickly on his tail. So he pilots around the buildings and integrates himself among them and actually leads the strike against Megatron.

The "tooth fairy" Autobot (the one that lands in the pool) is definitely Optimus Prime. Although it cuts to Ironhide taking on his vehicle mode immediately after the Autobot hides behind the tree, it's definitely Optimus Prime. That's why there's an angelic chorus of sorts that is heard as he rises from the pool. Look at his head and you'll see it's almost identical to that of Earth form Prime. Also, look carefully at his design and you'll see it matches exactly the Protoform that scans the Peterbilt.

1. Starscream might be the only one in the "movie universe" left that can travel back to Cybertron to either take over and/or get reinforcements. This would introduce Shockwave and new decepticons in next film.

2. I havn't had time to read the entire thread yet so sorry in advance if it has been stated before, but I found it interesting that the "dead" decepticons were dumped to be destroyed in the ocean. After they were defeated in the Gen 1 cartoon they made an underwater base in the ocean.

It'd be a great nod to the G1 series and it would be inkeeping with Michael Bay's proposed aircraft carrier character for the sequel.

Supposedly the plan is to feature Soundwave and not Shockwave in the sequel. It'd make sense given that if anyone would do his all to find a way to bring Megatron back, Soundwave would be the Decepticon for the job. Or maybe they'll make Soundwave and Shockwave a team given their similar sounding names.

Am I the only one that doesn't think Sector 7 was truly disbanded? That's a whole lot of people to leave out of a job and it doesn't make sense to scrap the only team with years of practical experience regarding Cybertronian technology.

I would assume that Sector 7 would actually be restructured as a coordinated effort between the Autobots and military in case there were another Decepticon invasion. Maybe leading to the creating of a Teletran 1 for the Sector 7 team to communicate and coordinate remotely with the Autobots and better scan for any Cybertronians entering Earth's atmosphere in order to seek them out and determine whether they might be Decepticons.

Key roles could be given to Keller as director, Simmons and Banachek as Keller's direct subordinates, Lennox and Epps (and their surviving team members) as military support, Maggie and Glen as tech support, and (unofficially) Sam and Mikaela as liaisons to the Autobots.

I always thought that perhaps the reason Bumblebee could suddenly speak at the end was because of the brief jolt he received from the Allspark when he was fiddling with it to make it smaller. What I find interesting, however, is that during the scene when Sam gets the Sector 7 guys to free Bumblebee (this is where Bumblebee has his Iron Giant moment where Sam has to talk him down from killing the Sector 7 grunts), Bumblebee is actually already speaking at this point. He's threatening them in Cybertronian.

Weird.