Odd though it sounds, I don't paritcularly care about Cosmic Doom. I want the REAL Doom. I'm not a fan of that look we've been shown but I suppose as a stepping stone it's alright. I just want us to get the real Doom look and stick with it.
Problem here is that we're taking Doom's BEST moment from the comics and putting it in the SECOND film... I just hope Galactus doesn't punk him. There's a reason Doctor Doom, not Galactus, is the F4's arch-nemesis and the reason is simple; give Doom warning and time and he WILL devise a way to knock purple boy on his colossal backside.
And probably drain the power to destroy planets from him in the process.
The only story that even comes close to bringing Doom up to those hieghts is "Unthinkable", and since the magic in it gives it zilch chance of being adapted... well I just hope Doom's big screen power theft doesn't end up rubbish. :\