You start to lose me on that list at Otacon. Adrien Brody totally has the wrong vibe...
The Rock might not be bad, but I think for Raven you might do better with an unknown. Uma is a little too much for Sniper Wolf and Milla, although hot, I think is wrong for Meryl.
All that said I don't really have replacements for you. :lol
Hmmm... Lemme think of my dream cast, can have any actor from any era...
I agree w/a lot of this. Adrien Brody has the look, but agree w/the wrong vibe. But also, I cannot think of anyone better. I do think the Rock would be a very good Raven though. I was just watching "Fast Five" last night, and he is jacked even more than normal I feel in that movie. I think he has the right look and feel for Raven. But as you said not over the top. Just very calm, reserved Rock.
Meryl for me would have to be younger. Someone like the one girl from Twilight.
Ashely Greene I believe is her name. I've never seen Twilight, but she is in a new horror film coming out, and I believe she has the look and younger feel of a Meryl.
Sniper wolf, I am stuck on. Marion Cotillard seems to be a foreign girl of the moment. Maybe....
I love the Karl Urban as Grey Fox suggestion. He is very under appreciated IMO. Maybe a little too big/large for him though.
I do not like Tom Hiddleston as Mantis. He is a great actor. Probably my favorite part of Thor. But I don't see him playing that role properly. I guy I would like to see as Mantis is Rorshach, Jackie Earle Haley. I think he would make a really great Mantis. Not even for the look, but that helps. He could play that man on the edge of crazy but calm, very well. Smart, but insane.