I’m glad you liked it. What exactly do you mean by double stick? You mean the analog stick for movement or something like using both analogs?
I mean the left analog stick for movement and the right one for dealing with the magic mechanics, like a twin-stick-shooter.
Oh, I see. I have tought of that but brushed it aside because I have not done anything like that and I was a bit tight on time.
If you continue to develop your game, you should really try it. It's really easy to implement and play with :-)