That was one of the few things I liked. Superman felt like Superman. Yes from a story telling aspect it made the League redundant. But the feeling you got when he showed up and tide turned instantly was the first time I got legit superman vibes from the DCEU. Iono something that had a big effect on my taste for Superman was the animated JL shows. And when Superman supposedly dies Flash says something that always stuck with. I dont remember the exact quote but hes talking about he can't belive he's really gone. Then he says something like No matter what we were up against, as long as Superman was there we knew we had a chance. Again not an exact quote havent watched it in a long while. But that one bit of dialogue perfectly represented the hope superman inspired in everyone. Even other super heroes. What we got in Justice League was the closest thing to that for me. But yes from a story telling view it backs you into a corner and makes furure team up problematic. Don't think that's gonna be an issue anymore though.