User blog comment:TheDoctor230/Crossovers/@comment-27700324-20170528165906/@comment-1330227-20170528183118

I don't think anyone has a problem with the four show crossovers. The OP was saying they want the two crossovers as well as the four show crossover. Plus, we haven't really had a four part crossover. You can't really call Medusa a crossover episode. It was a three part four show crossover.

The problem with this past years crossover was that it happened to fall right on the 100th episode of Arrow. They wanted to pay tribute to the 100 episodes of Arrow while still doing the crossover. I think this year will be better because they won't have any big milestones to work around but for the following year, I worry since if they stick to current number structure, the crossover will be episode 100 of Flash.