Agreed. I think it depends on the screen time each character has. If it is brief I think you can get away with having a megastar in it. Just their presence kind of speaks for themselves. But you would like relatively unknown actors to take over that role and make a name for themselves. Of course then there is a Johnny Depp who can come along and totally blow that theory to pot.

You seem to be assuming they're mostly bad actors. You didn't name anyone specifically so it's hard to know which you meant, but a number of them are very good actors, in which case, what you're saying is type-casting and that's always a mistake with a good actor, who doesn't have to be the person they were in their last few films.

This is why I want to see relatively unknown actors/actresses in Warcraft. I mean, Lord of the Rings had a few well known actors, such as Ian McKellen of course (who is a very good actor in my opinion), but a lot of them had been relatively unheard of in mainscreen cinema films before! And that stopped people going to see it because "..." was in it.

Which imo would be a problem with Angelina Jolie and Will Ferrell in particular..

Maybe it would be better for a mix of well-known but easily adaptable actors (like Ian McKellen was in LOTR) rather than just big names who are very typecast! :)

(sorry to everyone else who hates LOTR, was just one example!)