#3 Turn Finn Balor heel
In all honesty, WWE needs to make big moves in order to keep the WWE Universe on their toes and turning one of the biggest fan favorites heel would be a great way to do that. In fact, it could finally give Balor the shot in the arm he needs in order to reach the upper card again and creates something different for fans in the process.
Sure, The Club reunion is probably out of the question, especially since AJ Styles, Gallows and Anderson are all on Raw, but that doesn't mean he can't find others and create a new faction of his own. At least this way, WWE can capitalize on what made Balor a star in NJPW, have an interesting story on Smackdown Live and eventually put Balor back in the title picture.
In the end, Balor deserves a lot better than where he is at right now and WWE really needs to take advantage of all the ill feelings of The Demon's push throughout the past couple of years. If nothing else, it could act as a cathartic moment and have fans legitimately interested in what happens next, which is what WWE needs right now.