Two new grades of materia...
Combat materia already goes up to 40 which is a massive increase from HW materia that only went up to 12.
Of course grade 7 and 8 materia applies to crafting too.

Just thinking about how much these are going to give over SB materia, this is getting kind of absurd.

Maybe grade 7 will be easy to acquire and meant more for casual players and crafters while grade 8 requires jumping through some extreme hoops?