Surprisingly, Batman V Superman: Dawn of Justice Ultimate Edition manages to fix a lot of the problems with the original version with only half an hour of extra content. It's able to recontextualize the central conflict of the title with added depth and fixes a lot of the plot holes.
It also comes to a more satisfying conclusion due to great callbacks to previously unseen characters and is allowed to be more mature by being able to show more of the violence rather than hide from it or edit it out. Additionally, seeing more of Henry Cavill's Superman saving people is always welcome.
Not all of the problems are fixed as the unnecessarily destructive third act is obviously still present as is the forced franchise set-up that still feels very clunky. Ben Affleck's portrayal of Batman is still excellent but the increased violence makes him killing even more distracting.
It also comes to a more satisfying conclusion due to great callbacks to previously unseen characters and is allowed to be more mature by being able to show more of the violence rather than hide from it or edit it out. Additionally, seeing more of Henry Cavill's Superman saving people is always welcome.
Not all of the problems are fixed as the unnecessarily destructive third act is obviously still present as is the forced franchise set-up that still feels very clunky. Ben Affleck's portrayal of Batman is still excellent but the increased violence makes him killing even more distracting.