We're going to have reasons to criticize anyway because for me taking forever on vsXIII (to the point of morphing into a next-gen FFXV!) and KHIII were just jokes, not my REAL problems. My real problems are how they're focusing more and more on a few tentpole series, sporadically released ones at that, while doing relatively little outside of that like they used to in the SNES/PS1 days or even PS2 and DS. With XIV more or less wrapped up maybe this will start to shift especially with the 3DS taking off and to a lesser extent an intent to deliver meatier experiences to mobile.
And anyways specifically on continuing FFXV and the combat system: they said they'd still go with turn based (or "command based") in the future, and for all we know FFXV would've been had vsXIII not taken that number for itself, and if FFXV has a compelling, big enough world to continue developing with new games then they can bring it on, hell I make jokes about "XIII spawn" but XIII-2 was fun and Lightning Returns looks to be enjoyable so I don't REALLY care so long as the product's compelling and that's not ALL they make (... huh, that was something of an issue with XIII actually, but that's more XIV's fault.)