Ahh, I think I was misunderstanding how the missile works. I thought Poczy was able to create projectiles, but this is rather the ability to fuse it to an existing projectile, such as one of her arrows? That sounds fine, then. Maybe put in the example of her arrows so it's more evident.

For MM I recommend the first option. That way the important information is all in the ability section and you can upgrade the abilities independent of each other.