@moldar: I have a similar-ish idea that's going to revolve around gold buffing of some kind. Should make it into the next version, so maybe you can comment again when it comes out :)
@mckertis: I think the others have addressed most of your points -- and on several counts, I can agree that DD *does* have elements which may seem strange or useless for new players, but which turn out to make a startling amount of sense once you get good at the game. :P Though I agree: the Bloodmage spell is currently not fantastically useful! That's being changed in the next version.