Last year's Arrowverse crossover was light on the Supergirl. It only tied into the last few minutes of the episode and only involved Kara (Melissa Benoist) when someone like J'onn J'onzz (David Harewood) could've been a big help with the Invasion — oh, and that other guy with the red S (Tyler Hoechlin), or Mon-El (Chris Wood). That was partly because the decision to include Supergirl came late in the process and a skip week to allow for filming wasn't built into the schedule as it had been for Arrow, The Flash, and Legends of Tomorrow.
With a new, even bigger and more emotional crossover planned for this season, EW.com asked executive producer Andrew Kreisberg if there would be more characters from Supergirl involved in the four-way crossover:
"Kara and Alex are at the center of it through all four hours. One of the things we've been doing a lot this season is getting back to season 1 and really making it Danvers sisters-centric, so a lot of what's going on this season is Kara and Alex doing things in tandem, and the crossover won't be any different."
When he says "getting back to Season 1", I get a little nervous. I like the show a lot better since the move to the CW and getting rid of the workplace drama aspect of the premiere season. But the connection between Kara and Alex (Chyler Leigh) has always been a high point for the series since the show began, so if that's what they're wanting to refocus on, then I'm all for it.