Thank you all for your Feedback so far!
I talked with a bunch of other Players about that idea since then, and the results were mixed. Which i can completely understand of course. I think there is a reason why this current System is in place, and i'm feeling that all classes throughout the game are currently very well balanced from what i've heard from others and from my own experience. That said, i think of course that the aspects of it shouldn't outweight a normal Materia socket - but moreso be a second optional option to choose from. And since said Materia is just a normal item and it would be too strong / or outweight other options you can still balance the percentages on it. But thats why my idea for it is to keep them weak, but still unique if that makes sense.