Again in defense of the "low AP" system that I find myself a far better idea than the actual system too, I'd point to Xcom.
I think there is absolutely no issue with comparing it to Xcom. I love Xcom and I'm hyped about Xcom 2.
But D:OS had a combat system that -- while imperfect -- was widely praised. D:OS2 is a sequel, and I think what most of us are looking for is an upgrade to the combat with some of the wrinkles ironed out, much like what we can expect with Xcom 2.
This change seems a bit too radical.