I agree with you completely about Bucky's return, Steve's death, Bucky as Cap: These all sounded like TERRIBLE ideas to me, but Brubaker's been able to pull them off beautifully. (I still grin every time I think of that Bucky-Batroc encounter.)
At this point he's worn down all my resistance. My feeling is, "Hey Ed, you wanna bring a character from Heroes Reborn into this? Do what you need to do, man. I'm right there with you."