It's been like that for a while. It was a problem with Flash: Rebirth, with Countdown, with Full Throttle. I sort of feel like the early New 52 escaped the problem and built more organically, at least some of the books I was reading. But those kept getting cancelled.
If you compare Final Crisis to Metal, they're both similar in structure: cosmic threat turns earth into a nightmare between panels, the heroes seek help from the multiverse to restore the world. But Final Crisis *finishes.* Metal sets up the alloys, the Challengers & Hawks, the crack in the Source Wall. It's more like COIE in the way it works hard to set things up for the coming year(s) of stories.
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