It could be great with joysticks
I mean, it's already great. But the swinging mechanics lend themselves to analog input. And for those with more than one joystick, that could be a (relatively) easy way to put in multiplayer.
I'm looking forward to any updates if you find the time, but very happy with what I got for my money!
BTW, the visuals are great. Minimalist, but well animated, and very cool. And the special effects of the spells the bad guys cast work really well.