They definitely should dig a bit deeper in the direction XII was going for.
What I want when I play a FF game is control over an entire party, take my time to decide the best course of action in battle, and adjust on the fly with the resources available... Of course, I also want Bahamut, Ifrit, Odin, Shiva, etc... to kick butts in all their glory... But when it comes to the core of the battle gameplay, what I want is control. Not some half-assed twitchy button mashing gameplay that requires barely a brain to handle.
Sadly, for this to ever happen again, S-E would have to renew their creative pool of brains, because the ones at the helm right now are clearly getting out of touch.