The fact that everything costs ATB except basic attack, which gains ATB, is in every respect an upgrade from the original ATB system. It's essentially the same system as FF4-9, but now you're engaged in the process of filling it up, switching between characters to perform basic attacks in order to accelerate their ATB growth, with the added bonus of looking like a cool team! Moreover, now, your ATB gauge isn't just 1, it's 2! So when the gauge is full, you keep the overflow! I'm burning up over this
My 3 biggest questions right now:
-Quoth the demo: "Once an ATB bar is full, you can enter tactical mode." Can we enter tactical mode without a full bar?
-Can you switch between characters in tactical mode? *edit: looks like you can, although when they do so in the demo, both characters had full ATB bars*
-Can we control the camera in tactical mode? *edit: it appears so, although whoever was capturing the footage really loved slowly rotating.*