So now all the team's back except Green Arrow, which is sort of what I've been thinking might be a sensible way to go -- let Oliver be mayor full-time and have Spartan lead the team. Even aside from Ollie not being "there yet" (and GA being wanted for murder), it kinda makes sense for him not to divide his focus between two very demanding jobs.
I'd been thinking that Anatoly seemed incongruously benevolent in the flashbacks. Now we get the explanation for the difference -- he really was trying to be better then, but the pressures of running the Bratva without Oliver by his side made him lose his way. Sort of the reverse of Ollie's journey from the darkness back to the light.
Odd to hear Curtis say that ninja-style hood/mask made his face itch. You mean that weird T-shaped thing he has glued to his face doesn't make it itch? I guess we're supposed to think it's made of some special high-tech material or something.
Also, we get confirmation that Team Arrow normally uses "trank ammo" in their guns. I'd had that impression, but I hadn't been sure.
I didn't particularly like Anatoly's attitude in this episode. Oliver asked him a favor: kill Chase. First thing he asked in return was a "down payment" from Ollie. Seriously? Oliver as a member of Bratva had done everything he was told in the past, not the least of which was to kill other people. When Diggle finally convinced Ollie they could take down Chase, and he subsequently told Bratva to stand down, the Russian leader refused. It's like their friendship quickly went out the window. Now to me Anatoly is just a common thug, but as you said, he lost his way when Oliver left.
I liked how Felicity and Curtis were instrumental in disabling Chase's scrambler, thus providing solid evidence that revealed him to be Prometheus. Let's see how he gets out of this one.