I definitely tempered my expectations when I heard about that, at least until we know more about what role he’s playing. If he’s the main character, I don’t think he could carry the film and it could definitely suffer as a result. But as a weird, quirky antagonist like in Blade Runner, even if he’s not very good in it the film as a whole could still succeed. Give him a role like Michael Sheen’s in Tron Legacy and he could do alright.