watched this a few days ago. loved it. better than the condensed Superman: Doomsday film some years ago ( though I liked that one, too ).
and WAY better than how Doomsday was used in BvS. In fact, this film, to me, further magnifies the problems of BvS and the DCEU as a whole.
in this film, Superman behaves like how Superman is supposed to. The world treats him like how they're supposed to. His relationship with Batman and the rest of the JL is how it's supposed to be.
They used Doomsday way too early in the DCEU. He should have been saved for AFTER BvS and JL and a MOS sequel. Superman should have been more established as a beloved hero to the world and have a strong bond with the JL. as well as a stronger relationship with Lois. THEN you use Doomsday.
so, I'm looking forward to Part 2 with Superboy. and I'm actually hoping we get an animated Supergirl film in this universe. I'd really love to see that.