Doomsday felt like it was thrown in at the last minute, another problem I had with BvS. Every plot point and conflict that was established in the first two halves were thrown out as soon as the cave troll from LoTR was introduced.

Not to mention BvS blew their wad early by killing Superman. Especially when they established in the movie that the whole world was not convinced if Superman should even be helping them. At the end they are now mourning him, it felt forced and didn't leave the impact the comic established.

I don't mind a serious tone, but the script has to be handled decent to fit it. I'm not a huge marvel fanboy but I do appreciate that Civil War was able to handle a serious tone and balance some levity within it.

I don't want theses movies to become lighthearted and full of puns BUT I would like a few more moments of levity. In MoS there were many moments like this. Almost every moment where Clark was talking to his mother felt happy, bright and full of hope! They were among my favorite scenes in any superhero movie! They were light but serious. Batman V Superman had none of that. And it needs it, to counter balance the tone. In my opinion both Marvel and DC have a tendency to go a bit far in one direction. There are zero stakes in a Marvel movie, for me at least.