I think that ultimately, what Redcloak wants is for the gods to descend to Earth, apologize for what they've done to his people and to him, and make the world fair for goblins by divine might. (And I imagine he doesn't really know what "fair for goblins" means in practical terms- it's a nebulous goal that he's never really thought about specifically.) And the most important part is that it has to come from the gods, because he blames the gods for the goblins' misfortunes, he thinks anything less than the actions of gods won't bring about the change he seeks, and anything less than vindication by the gods themselves won't let him justify the things he's done.

And that's not going to happen- he's never going to get the sort of divine vindication he wants, because the gods can't just fix this problem and they don't think they've done anything wrong.