It looks like they're going for the same gameplay system as FFXV, which is more than enough to make it Mixed Reaction City with the fanbase tonight.
And given the history, you know the nostalgic purists are gonna tear the remake a new rectum for this reason alone. Don't get me wrong, I personally can accept change, and I know sometimes you just can't please some people, but if they want this to sell massively and cover all bases - that is to say newer players and even the purists who grew up with the original game - the only way I can see Square Enix quell their anger is if they find a way to dipswitch between two entirely different gameplay systems, if not bundle the original game with modifiable graphics. But that's just me.