Prediction: Lots of Felicity and Diggle being annoying. Lots of bad dialogue. Lots of illogical contrivances. Dinah still in the background doing mostly nothing. Increase in cheesy comedy and a lighter tone. Felicity and Oliver's relationship to be as annoying as ever and the Diggle bromance to be fixed after 2 episodes tops. Of course bad stuff will start happening and Felicity and Diggle will start lecturing Oliver and whining about everything all over again. Merlyn will play a huge role in whatever happens even though he should have been dead ages ago. Oliver will make many decisions that make no sense. The villains will continue to have dumb reasons for doing whatever it is they do.
What I want to happen: Hire new writers. Reduce Felicity and Diggle's roles to next to nothing or kill them off. Dinah to become the lead female character, Roy to come back. Have Nyssa kill Merlyn in Episode 1, don't bring him back. Oliver grows a brain. Oliver, Dinah, Roy and Thea become "Team Arrow". City gets officially renamed to Star City, Starling is never mentioned again. Dump the opening monologue, ditch the phrases "You failed this City", "I needed to become someone else, something else", "I started this Crusade". Get a good actor to play the villain, give them a motivation that actually makes sense, a plan that isn't ******ed, henchmen that are actually useful and give them an ending that isn't anti-climatic. Keep the show serious and make the comedy more realistic/organic. Give Oliver a new costume that doesn't look like a generic green jacket with a hood.