I'm under the assumptions the scrolls are going to work like everything else where we are going to have to overmeld and use exactly the right materia, not constantly fusing lvl 1 materia. It would be nice if you have the option to use different leveled materia and use 32 lvl 1's but this would break every rule of the game so far, and to me this is just SE attempting to make use of that really awful and poorly designed materia exchange system they added.
