Lex is probably the main thing I disliked the most.
And not enough Batfleck but it got me excited for his upcoming movies
Looking at the ultimate cut I think they cut out a lot of Superman.
Lex is hit or miss. Its not traditional Lex. Some scenes are very good imo, like the Capitol Hill and Rooftop scenes. Then he just gets silly when creating Doomsday and then letting his loose.
I think they make a good movie as a follow up to MOS. Its just not the movie people wanted. The light of Superman vs. The Dark of Batman. Superman was still in a not so great place so we couldn't get that duality.
I think the movie would have been much different if MOS was liked more or Superman was more cognizant of the destruction he was apart of.
In hindsight, they probably would have been better acting like Superman was no threat at all and just switch it around and make it just about him trying to stop Batman.
Just make Superman already loved by everyone (and have in a good positive/hopeful mood) and maybe more people like it.