So DC are STILL spectacularly missing the point. Arrow occasionally gets grim and gritty, but it also doesn't forget to be fun. The Flash's entire cast now have superpowers, which is irritating, but it's still fun. Supergirl rams it's feminist agenda in your face every thirty seconds, but it's still fun.
All these years, and DC is still playing catch-up with Marvel. 'Oh hey, Marvel's TV shows are grim & gritty, so let's go that way too. With the Teen Titans of all the choices available.'
At least when The Legion turned up on Supergirl, Brainy was funny. Sheesh.
Oh, and THAT moment in the trailer?
I'm prepared to be proven wrong, of course, but right now? No, Johnny DC. Just no. Didn't you learn anything from Justice League?