It has been reported that Neil Marshall will replace Del Toro and Ron Pearlman will be replaced with David Harbour. While Pearlman is a fantastic fit for Hellboy, methinks age had something to do with it. I don't really consider Harbour a solid choice for replacing Pearlman. He's more of what I would refer to as a solid B lister. Kinda like Jessica Biel.
People hate change. We're lazy. We like familiarity. Im a perfect example of that. If change is to happen we want it to happen on our terms. But it usually doesn't and we're left wondering why. And out of respect for past actors of past movies, they never tell you.
Neil Marshall has reportedly signed on writer Aron Eli Coleite (HEROS). I'll wait for the official review on this one. I like Del Torro's take on things. Sometimes new blood is a good thing.