I think it's really intriguing to learn about the behind-the-scenes casting choices for "Batman v Superman." Leonardo DiCaprio is such a talented actor, and I believe his involvement in the film would have brought a whole new level of intensity and depth to the character of Lex Luthor. It's fascinating to imagine the different direction the film could have taken with DiCaprio's input and ideas. However, I also think that Jesse Eisenberg did a fantastic job in the role.

His portrayal was unique and added a certain eccentricity to the character that brought a fresh perspective. It's always interesting to consider the "what ifs" in casting decisions, and I believe both DiCaprio and Eisenberg are incredibly talented actors who would have brought their own distinct interpretations to the role.