This episode of Arrow continues where it left off in The Flash S03E08 and is much more focused on Oliver Queen than The Flash was about Barry Allen / The Flash. We get to see a tale of what could have been bringing back characters and moments from past events in the show. For the most part this was done well and quite emotional because you could relate to what the majority of characters are feeling. Although there were some slip ups that I am sure off were well intended but did not come out as such. Let's say a very poorly done CGI job in this day and age is unacceptable still it was considerate of the producers of this show to have the person I am referring to in this scene. Another character that was quite prominent in the past also only gets a few seconds of screen time and in my opinion he deserved far better. Other than that I think it was a good episode where the crossover events are personalized and where mostly Thea and Oliver get a chance to overcome their grief and regret.
Now even with all the craziness going on in Arrow the events in this crossover episode easily tops what they have experienced before. I mean the gang of vigilantes fighting aliens? Even with the occasional meta humans appearing in the show that is something you wouldn't expect that quickly. But it is exactly one of the reasons why I am loving this crossover saga since it embraces the comic book universe a whole lot more and is one of the few times where the audience gets confronted with the bigger DC universe. Like I said in my review of The Flash S05E08, this is the closest we have come to an expanded universe similar to the Marvel Universe. I can't applaud this enough since this is what makes comic book shows so fun.
It also felt like that the events in this crossover saga will have positive effects for Oliver Queen in particular but that is a guess on my part because obviously I don't know what the writers have in store in future. So definitely a good follow up in this three part crossover.