I know a lot, and that's an understatement, of FFVII fan boys/girls are all giddy with the announcement of a Materia-like system that is due to be released in the future. And while this brings back all of your fond memories and prequels what sounds like a grand initiative of customization of gear let's remember one thing. We've already seen this before, only it wasn't called materia it was called evolith.
I'm all for customizing gear to taste, preference, etc but the first attempt that SE gave us with this in the evolith system was below sub-par at worst and situational at best. The similarities are uncanny, use furnace to etch slots into gear, put stones into gear for various stats, and have the option to have them taken out if you want.
So here's my question, are we going to see another customizing system that leave the majority of players out in the cold. Or, are we going to see something that we've never quite seen before that surprises us all? Because it doesn't take a genius to know that we don't need anything extra to use job abilities or spells that materia in VII gave. Could they give otherwise unattainable spells and/or JA? Maybe. Do I think they will? Unlikely.