I agree with more categories. I just put my novel back into action because "fantasy" can mean so many different things. As my novel is almost an action-adventure in plot I put it back there despite the fantasy setting.
Fantasy can mean, a political drama, a romance, a slice-of-life, completely fantastical with themes of godhood or paranormal. It could also be a military tale involving wars and armies. Or it can be a simple adventure story full of action.