I usually play with camera height at max, the tele camera I mean, since I want to see as much as possible of the field, so not really much is different from that viewing angle. The new, improved collision system, and defence, debatable, in my opinion. I really have no idea how dramatic some improvement should be to "revive" the franchise for me, but it'd have to be a little much more than that.
But since every person will have different tastes, I bet that for at least just as many who love that game's actual direction, there are, maybe, as many that are still disgruntled, like me. And since it's FIFA's way or the highway, one can have just this many options.