A two show crossover, not with The Flash

I agree with Kiwi....I think a team up of Supergirl and Arrow is long overdue. Although Oliver had his doubts about Kara and her abilities at first he "changed his tune" once she saved his life during the Invasion! episode. Stephen Amell has also spoken in interviews of working with Supergirl more.

I too would like to see more Kara/Oliver interaction, Stephen Amell has said so as well. It's logistically a difficult task. I think it should be on Earth-38 making it a Supergirl episode, I can't see a good way to have Kara on Earth-1 without Barry involved. The big question is what would bring Oliver to Supergirl's Earth? If Oliver needed help wouldn't he ask Barry first? I guess if Barry were unavailable then he would reluctantly ask Kara. Perhaps Oliver accidentally windes up on her Earth and stays for a bit before she uses the interdimensional extrapolator to send him home.

I'm interested to see how the writers start the four way crossover on Supergirl this year.

I would think Legends because of two of the female badasses on that show, Vixen and White Canary. But...after seeing Felicity and Kara just about being twins, I'd go with Arrow.

Stephen Amell has also spoken in interviews of working with Supergirl more.

He has and thus this might work...of course the hardcore Arrow fans might not really be fans of Supergirl.

I would love to see a Supergirl/Arrow crossover. Would LOVE LOVE LOVE not only more comedic interactions between Kara and Oliver...but can you imagine scenes between Alex and Oliver? lol

Yeah maybe she'd make him a bit less brooding lol.

Personally I want to see Oliver react to James trying to be a vigilante. That might happen in the four show event.

Funny thing is though is what type of problem they'd face in an Arrow crossover. If Arrow can't deal with something, you'd think Kara can. And if Supergirl can't deal with it, how would Arrow help?

Although another interesting scenario is if The Waverider travelled universes by accident rather than time, therefore ending up on SG Earth.

I mean by the Sci-fi logic of these shows that is not a stretch.