Well... worst Crisis on [insert name here].. ever. Basically, the baddy dispatched in five (ok, ten minutes tops), while lolly gagging around for three episodes (well, OK, two and a half, they did something in the first one) and then addressing this issue as any other non universe threatening issue that hey have in their regular series.
The only thing that was remotely interesting to me is that now they are on Earth Prime (although, one has to wonder, why all of the separate earths got wished back to existence; just place them in one huge mega giga Earth, then. That way, you can get crossovers with much more series, than just these five (well, OK, now, with Black Lightning, six)!
As one good meme says: "I did not expect much, and still was let down".
And, I just realized, OMG, Lena still (again!) does not know that Kara is Supergirl and we will see more of Lex Luthor in Supergirl series. This is literally hell.