Episode 1 is a tribute to season 1
Episode 2 is a tribute to season 3
Guess this is a tribute to season 6

Another strong episode this season, pretty/very good. The action, writing, and acting were quite good. This episode had some great callbacks to the third season (personally my least favorite Arrow season) but also some real heart and emotion.

Its episodes like this that really highlight that Oliver is the best and most mature hero in the Arrowverse. Thought Oliver/Amell had some really strong scenes tonight, lots of emotion and depth. Liked how we saw Oliver's struggles with doing what is necessary and also doing what is right. Good job Amell tonight.

The fallout of Earth-2 getting destroyed was handled well, just as Oliver was exploring a lot of emotion, so was Laurel and Cassidy did a good job here (along with the writing) showing how she is grappling with her entire planet and all those she cared about being wiped from existence.

It was nice to see Katana return, and a surprise to see China White. Also nice to see Lyla again, liked that Diggle referred to her as Harbinger. Was certainly a surprising twist that she has been conferring with The Monitor and is working with him to prevent the coming Crisis.

The flashforwards were fine this week, slightly stronger than the premiere. Certainly not as interesting as what's happening in the present but learning more about Diggle's two sons was nice.

Next week's episode should be really good returning to Nanda Parbat and seeing Thea and Talia again.

I really hope Ra’s comes back for this episode

The flash forwards were once again unwatchable. Just focus on Oliver already...its the final effing season. Very cool to see Katana and China White again.