Once the game is properly balanced around the four way aiming, I'll absolutely update and play it a bunch more. I'm just waiting for all the kinks to be worked out in that.
@Misery: Going back to the cave story example, many enemies have mass projectile spam that can go in any direction. The trick is, there, you can actually fire through their shots and destroy their shots, and your weapons were actually massively overpowered to make up for your low health and limited aiming (well, until you got hit, but that's a different problem). Another part of my concern is the idea that enemies can cover four angles, and are suddenly untouchable for many of the mage classes. You can get around that with diagonal shots. Yeah, some enemies in Megaman and Cave story had those invulnerable projectiles. You know what else they had? An extremely slow rate of fire and a very particular pattern.