I won't lie that I would have enjoyed MoS more if 1) a bit more attention had been given to character development, 2) the characters were rendered a bit warmer and more relatable, 3) color wasn't desaturated/blue-gray tinged. I would have. Those to me are things that would have made the film more enjoyable for me personally.
But that said, I'm also an apologist for why those things weren't done. I personally loved the world-building in MoS same as I do for the Fellowship of the Ring (both book and film). There are some very coherent and detailed symbolic mythic and archetypal themes that I'm positive are deliberately woven throughout this film,* that sets up BvS and the the story arcs beyond into the JL. MoS launches a very grand vision: it sets the stage for superheroes as myths and archetypes being relocated into our modern real world--and in order to break free from the past mold for Superman, it is a tense and gritty world of difficult choices. We see Superman as an exemplar of that in this film. To my eye, Superman is also reframed in this film to start (i.e., the character is for sure going to grow and evolve in subsequent films) more as a lost and wandering soul in the tradition of a Greek demigod hero. It is not a world of good feels.
In order to achieve that Snyder sacrificed telling a story that could have been more of an intimate, in-depth character study filled with warmth and relatabilty (such as Captain America: The First Avenger, let's say). Tonally it would have been difficult, although not at all impossible. But length-wise, though, to do that would have given us a 3+ hour movie, i.e., if the other elements I just mentioned are to remain intact. And overall I'm glad those themes are there--if one or the other has to be sacrificed I'd rather keep the world-building and mythic theme elements. The broader and deeper agenda for this approach to storytelling of superhero myths is very satisfying to me. I'm so glad that direction was taken.
So that takes care of (1) and (2) for me. YMMV, obviously--and clearly, roughly about half of the fan base doesn't like it (or bitterly hates it). If you don't like it, I'm probably not going to change your mind. I can only tell you why I like it and hope that you can see how it could be appreciated that way.
For (3) above... I think the color palette is probably intended to emphasize that Superman, as an archetype, is now being reborn into a more serious world endued with weighty themes and consequences to actions, where perfect choices often won't be available, i.e., that is morally gray. So I can appreciate the film conceptually that way. It doesn't ruin my experience of the film. But do I like it aesthetically? Not at all. And I actually don't see it as necessary, either. I do one day hope to see a version of MoS with the color's corrected in order to compare, in any event.
Anyway, when I watch the film now my focus is on appreciating how it reinvents the Superman myth. But I still find that there is a surprising amount of personal character development to be seen for Superman, and that he and other characters do have some warmth and relatability to them. It just gets kind of overshadowed by the weightier thematic stuff and the color desaturation. I guess what I'm saying is that if Snyder had found a way to keep everything that I love about this film conceptually, and render it a bit warmer way that personalized the characters more, I would love it even more. But even as it is, with the admitted flaws it has I still 95% love what is there.
*We even have a Joseph Campbell quote literally woven into Superman's iconic "S" insignia!
