Oh very interesting.
I like that it doesn't quite matter if this is present-day continuity or not, I'm sure it'll still somehow be a "Chapter" in the sort of Morrison Canon. With Janin's depiction of Superman and costume, and Midnighter, and the nature of The Authority, and all that other stuff, I thought to myself, I mean, perfect place for Grayson, Agent of Spyral to show up somehow. But ignoring scratching that itch ...
Superman interacting with Midnighter and Apollo should be cool. I'd be curious to see which old school Authority members also might appear in any way shape or form. An O.M.A.C., no matter who, is a good choice for inclusion ... other than like, the Batman of 3000 or more mainly, the Legion, OMAC (and Kamandi) was probably the first DCU alt future that "really stuck" as a possible alt future scenario or elseworld. And of course it's Kirby's "Near Future". And the interplay between like, a Morrison Superman and a WildStorm Midnighter & Apollo can really only be strengthened by putting Kirby's OMAC stuff alongside it.
Manchester Black is not only the obvious choice for inclusion but almost feels necessary to the whole premise. Superman already did the Authority riff story with the Elite, so it's really something kind of synchronistic to get him in here (recently Tomasi did some quite nice work with him and I suspect Grant will have read that). I'll reserve any expectations for later but just highlighting that I'm very excited for this specific mix of characters. One presumes "Brother Eye" is a factor as well. OMAC appears female, which is good coverage and could have interesting implications. Natasha is a great choice for such a group. If that is the neo-Black Racer I'm intrigued, because Black Racer is quite an appropriate character for that interpretation to stick and follows in the footsteps of how Morrison picked up Shilo Norman and took him to his next step (another series I'm looking forward to). To say nothing of just the whole "Oh right, and "The Death God of God Death" is on our team." To say nothing of a foot in the Fourth World door and a second Kirby avenue. Between Supes himself, Authority coverage, Joe Kelly coverage, a little Louise Simonson coverage, Kirby - particularly "Superman interacting with Kirby" coverage, I'm extremely excited (I've just been using HBO MAX to rewatch S:TAS and have been giddy about how smartly they use Kirby (and a bit of that post-COIE Byrne filter) to flesh out and make Metropolis feel like it has its own things going on.)
In general, I think it's a good creative team, a good idea for a limited, and if there's legs to the idea it seems likely to me that a two-part limited by a high profile team like this could springboard him handing it off to a hand-picked successor to actually then do a lengthy 'run', but that's not "needed" or "required", just something to think about.
I will say that if this took place "specifically" during Future State events, I feel like ... a clandestine super-hero unit with Superman, Apollo, Midnighter and the like, would have shut down the Magistrate in Gotham in about 45 minutes.