In the first half, at least, that doesn't quite work for me. Partly it's because I've read so much G&DM that I can more or less see a lot of jokes coming a mile off, and plus there's their usually weird sexism, both of which undercut the funny (though there are still some great moments), while the funny undercuts anything serious they're trying to do. I'll admit to not taking the time to care who the antagonists are, and the story doesn't seem to make that clear until the game changer part way through, so I expect I'm not supposed to. Future politics, blah blah whatever.
I also have pretty much zero investment in any of the original flavour Justice League, except maybe Wonder Woman on principle, and don't really know them enough to catch any subtleties in they have changed from who they were. Well, I know Superman isn't supposed to behave like Guy Gardiner, which frankly I could live without (I get that G&DM don't like the big guy, let's all move on), but I have no idea if Hal Jordan's reactions in his quieter moments are on the nose, or creepily off, or what. And if I never hear anyone, in any comic, talk about how Barry was the best man they've ever known again I'd be fine with that.
I do like the new characters they've added: Teri as the new Flash, with her personality maybe melding into Barry's; Ariel the remorseful Dr Frankenstein behind this mess. The pacing is good, with each issue moving the story along, and no one afraid of changing things up. I wish it spent more time on emotions and character interactions that weren't Bruce and Clark at loggerheads. There's some nice scenes later in with Bruce and Ariel, but we don't get as much character stuff as I'd like. I generally love stories where characters are displaced, and stories where characters don't know who they are, and stories where characters are worried they might be monsters. They could be all of that, but generally is not.
Then the second half of the run decides it's the third volume of Super Buddies, and starts putting that team together again. Which is something of a change in tone again, but on the other hand it's really nice to see the old gang back, and I'd much rather focus on Ted, Booster, Bea and Tora than the actual Justice League, so there is that. But again, we don't have a lot of time to reflect on how the characters feel being out of time by a thousand years, in the case of Ted and Booster, or in the case of Bea and Tora, how they feel having lived through the last thousand years. We do, however, get this scene:
( about a page and a half of JL3000 #15 )
So, nice to see one of my OTPs back together again. I should write fic.
The book's taken a break for the current pointless event of pointlessness, but will be back next month as Justice League 3001, with, if solicits are to be believed, a greater dedication to self-indulgent crack. We'll see how that goes.