Unfortunately I am going to cancel the series, I've lost interest and gotten away from what the series was meant to be which is what would happen to team arrow if Oliver was actually killed by Ra's in the mid season finale. So here I'll tell you what would have happen.
The guy that attacked Roy in the last chapter was Ted Kord the Blue Beetle, we would've learnt that Ted's parents were killed by Oliver in S1, he would eventually get on good terms with Roy and would've teamed up with him. Black Canary would come back as she saw the doppelganger arrow back in Seatle and now decided to tell Roy after hearing about what happened to Starling City, the doppelganger is actually earth 2 Robert Queen who came to this earth during the black hole on the flash. The team would go to Gotham for help, we would reunite with Robin and meet Nightwing who would've been Stephanie Brown similar to the concept art of Smallville Season 11. Batman would've been Thomas Wayne not Bruce Wayne similar to the flashpoint universe. At the end of it they would storm Starling city saving it from vertigo along with Atom and all the other side heroes on the two shows. Dick Grayson would've been mentioned as retired and married to Zatanna. At the end Robert Queen would be revealed as Roy's father on both Earths, Roy is the child of Robert and a girl that he cheated on Moira on which would make him angry and he would kill Robert Queen (Earth 2). We would also get hints towards Clark Kent who is currently the Blurr over in Metropolis who would've worn a similar costume to what he did in Smallville Season 9 just colored like superman.
Sorry for cancelling but might as well tell you what I had planned