From what I hear, custom games only support the use of existing monsters ATM. Is the ability to add monsters with custom decks a feature in the development pipeline any time soon, or is this a deliberate decision not to let players screw around with expected game balance too much? I doubt you're going to get much unique tactics from the editor as is (that isn't already covered by the campaign), but I can understand not wanting to spend time on dedicated custom mob graphics or risk irritating players while there's plenty of official content to come. Just wondering if this is something I should be bothered waiting for or not. Edit: Rewording a comment.
I too am hoping they beef up the custom game system. I come up with all these ideas I want to make reality but the current system doesn't let me