I'd rather see them take their time with these movies and get them right, rather than rushing them out for the sake of having them in the cinema, and do them wrong.
I saw yesterday that there are reports of Thor director Kenneth Branagh meeting with True Blood star Alexander Skaarsgard (son of Stellan). At 6'5" and looking as Scandavian as one can, he sounds like a good physical choice for the role. I've no idea how good an actor he is, but his old man is pretty talented. The other rumour is of Josh Hartnett as Loki, which I'd be less keen on. But not a bad start, Kenny darling!