In the future, once DC's rebooted cinematic universe has established itself and proven its quality, and Marvel has regained its storytelling prowess, a crossover might be a good idea.
However, any superhero confrontation would need to avoid the pitfalls of "Batman v Superman," where the conflict felt forced and contrived. The story would need to present a logical and compelling reason for these iconic heroes to clash.
It should be a movie based on it that Marvel and DC work on.
In the future, once DC's rebooted cinematic universe has established itself and proven its quality, and Marvel has regained its storytelling prowess, a crossover might be a good idea.
However, any superhero confrontation would need to avoid the pitfalls of "Batman v Superman," where the conflict felt forced and contrived. The story would need to present a logical and compelling reason for these iconic heroes to clash.