User blog comment:TheDoctor230/Crossovers/@comment-32114961-20170528181436/@comment-1330227-20170528182555

He's saying he wants an annual flash/supergirl crossover, I think. I want one too, and I hope this time it's actually a two part crossover instead of the villain appearing at the end of Supergirl and everything else happening on Flash.

Again, I think he means an annual flash/arrow, and they have only really done one big crossover that was both shows and just them. The second year was Flash/Arrow/Legends even though Legends hadn't premiered yet and all the others they've done are only small ones that are contained all in one show and not mentioned on the others. We need an annual 2 part Arrow/Flash crossover that doesn't involve the other two shows.

Another thing I want to see in an Arrow/Supergirl crossover is Oliver training James.