I have a theory about Artemis. Generally, my more creative theories don't pan out, but this one is based upon something that happened in Insecurity. Cheshire, Jade, tells Artemis she isn't working for Sportsmaster by choice, suggesting he or perhaps the League of Shadows is somehow holding something over her, but she never says exactly what. What if Artemis is now in the same situation? My other theory is that Artemis is now under a hypnotic command to spy on the Light for Batman in the same way Red Arrow did in season one. Yes, stuff like that does happen in real-life, but this isn't real life. Given how much development Wally and Artemis' relationship got in season one, it's really unlikely Artemis wouldn't be seen if she and Wally were still together. That's why I say something has happened to Artemis, and whatever it is it isn't good.