I'm kind of on the fence on this one. I think if the sprinting behaved at the rate much like Skyrim, then I might be okay with it. I would have liked a separate meter for sprinting since it can be unrelated to combat, but then again, they are called ACTION points. It would make sense by the end of my long run that when a battle is going down I should be worn out somewhat before focusing to shoot or swinging a bat like crazy. I guess it would make sense, actually. It's only used for VATS and you can still shoot/swing without draining AP.
The thing, though, I don't want this to "make up" for the lack of RPG elements. Things like DR/DT, a hardcoe mode, other things that rely on stat building to feel like a true rpg is very much needed to actually feel like your actions and creating your character matter. What are your thoughts?