What if it's a masterpiece and every critic love it? And they go and say "Why didn't they release this version in theater?".
Dude, I wish Spider-Man 3 had been great. I really do. However, as much as I did NOT hate it, I didn't jump up and shout, "Give me the Raimi CUT! Studio interference forced Venom into this film! I want the true version!"
Would it have been better? Probably. However, it doesn't exist, and, unlike Park Phoenix, which is bombing, it made a ton of money back in the day, so there was no need to re-release it. Dark Phoenix didn't even pull in HALF of JUSTICE LEAGUE'S opening weekend.
Not. Even. Half.
Justice League actually had 2 directors who had different visions of it. Now, Snyder's vision was crap, and Whedon's was half-baked Avengers-lite, but there were two distinct films vying for screen time and direction. An argument could be made for a director's cut from Snyder (for whatever reason someone would want that crap), especially since there is an extended cut of BvS which, although still pretty bad, is marginally less bad than the theatrical cut.
Kinberg helped write the movie. He directed the movie. He has been outed as having done DAILY rewrites on set, keeping the actors from having ANY chance to really settle into their characters or have a clue as to what is going on. He directed his script and now people expect a director's cut of a film under one director who also wrote it...?
Nope. This was the director's cut. Best case, you get deleted scenes of the original ending. The studio will be more than happy to cut and run, make a boxed set with all the X-movies, and throw this film in there. I mean, it can still be used as a coaster while you watch the good movies. No need to ruin a perfectly good end table, after all.