When I first played FF7, I was a kid who didn't even know english. I beat the game and killed all the weapon, didn't even know that equipping material would change my character stats, I would just dumb random material on all my character, for almost all the game I would just chain cast summon and with one character (Barett) chain casting cure all. So yeah, I'd welcome change to make the game far more challenging so that mastering the game mechanic actually be necessary. Except that's not what SE would do, there probably just gonna make it so easy you can clear the game by just clicking auto battle.
I think what worry me most, after the fact that it's square enix, is that they specifically call it dramatic change. Change is good, dramatic change is stupid. Now maybe if this means larger battle were you're entire team is involved, maybe like FFX or last remnant, but still keeping it ABS based, then that could work. But it's seems more like there going for dierge of cerberus or crisis core dramatic change, both of which I cared for very little.
I think what I'd like would be:
-Limit number restorative item you can hold to 15-20
-Remove Tent
-Expand the weapon system so that weapon have a more complex materia link, with more slot effect. And give every character weapon a certain flair.
-Remove single overpowered materia (like double attack, 2x magic and so on) and transfer those effect to weapon/armor material slot with some more complex unlock requirement (i.e. need to slot certain color in certain slot)
-Expand on the stats change system on materia, maybe make it more dynamic in combat
-And, most import, make the game far harder (but avoid burst damage or damage song enemy)