I just watched it, and agree. I didn't love it, but I didn't hate it but God damn that first trailer was a disaster. If they had advertised it better I'd have went to see it.
my biggest problems were how random bullshit happenstance propelled every plot point, and when Orion became Prime and got the Matrix and D12 or whatever the fuck his name was became Megatron with that cog, they should have got their real voices. the voice acting took me out of the movie hardcore the whole time. if he'd come out of that hole as Peter Cullen it would have propelled the movie up a lot for me.
It was fine, it was fun and had some cool shit in it, if I was 6 I would have loved it. however their advertising people should be drug out and shot because they fucked that movie for any success at all. I posted here about that first trailer being horrible and promptly forgot it got made and only remembered it existed because it was on the private pirate forum I'm in today and went oh shit yeah I gotta watch that train wreck and it ended up being good.
It did put me in a transformers mood though so I'm going to go ahead and read that current comic line that's going on this weekend, and I will buy the movie when a 4k disc drops