Eh...is this problem with Square Enix or is it a problem with Tetsuya Nomura? Asides from the graphics thing, which is still primarily on Nomura, most of these comes from Tetsuya's tastes and his inability to stop announcing things when there are unfinished projects. I mean, for all the talk about Final Fantasy, Dragon Quest IX and X from last generation were pretty simplistic. I mean, X being a MMORPG didn't help Dragon Quest that much, but it was still a pretty simplistic game (which has been the point of the series since VII) for an MMORPG. Furthermore, things like Tomb Raider: Definite Edition and Final Fantasy XIV: Reborn shows that they are dedicated to fixing their mistakes.
Still, if you replace Square Enix with Tetsuya, I agree with you mostly.