Fantastic episode. As a fan of the JSA books, I was a little bummed to see Atom Smasher go/be turned into the villain of the week. I kind of hope he isn't dead, but, anyway, yeah; Flash of Two Worlds! Next Tuesday can't come soon enough. I'm still hoping that, at some point, they can just go full-blown, Flash revival and have Gustin Barry meet Shipp Barry. I'll advocate for that until the day it happens, the show's cancelled, or I die.
Also, The Flash-Signal got me in the feels. That just felt like a big "**** you" to the DC overlords.
I'll say this: no one helps with collateral damage like Flash does. You can ***** about Man of Steel all you want, but, as far as I'm concerned, the TV side has squared that debate.