I will give respect where due: I like the sweep button. It's handy for me personally, as someone who is on several email lists that are public-facing. That's about it.
Every attempt to help me automatically is a pain. Like most things in this vein it never learns what you're trying to do, only what they would do in a given scenario that's vaguely like ours.
Even if they do repeat 3 (and I kinda feel they will,) it'll have a cliffhanger too. And I'm okay with that.