Yeah, I too don't mind watching her in the TF films, and her not being present in DOTM will definitely be missed. To me, it just doesn't feel right that she's not going to be in DOTM with Shia and the others, but... not much we can really do about it now. When I went to see the 07 Movie and ROTF, I didn't go just because Megan Fox was in it. I went to the movies because I wanted to watch some seriously epic live-action Transformers movies, to get blown away by robots who look like they could very much be real and all the awesome effects that gets put into the movies... and that's going to be the same case for when I go to see DOTM... to get my mind blown away by what I'm hoping to be the very best Transformers movie in Bay's trilogy.
I could see being drawn to a movie because of an actors talent but I don't see it because they are pretty. I'd watch about any movie Bruce Campbell is in because he's got this crazy talent to save even the worst B movies, Johnny Depp can be a draw when he's allowed to be over the top and crazy with a character. But pretty or hot doesn't cut it alone although there are some women who manage both hot and some talent like Milla Jovovich in The Fifth Element.
The funniest part of that short was when Larry shouted "Hallelujah" to Moe's inane faux-german babbling. And then Moe clunked him for it. *sigh* but I digress.