I really really do like this one. I probably listened to it four times in a row at the very least when I got it. Just listening to it made me think of villainry metal-style. I think you should try doing a remix off of battle music of any random RPG, preferably one that's not already on the site. If you can take Bowser's castle theme and turn it into something this good, I could only imagine how it would end up if you did something like FF7's Still More Fighting theme.