#4 Daniel Bryan
Daniel Bryan and Finn Balor have always been on separate brands. As a result, two of the best in-ring performers in WWE have not had the opportunity to get in the ring and have a great match. While they've crossed paths in the independents, they've not been in a WWE match yet.
In my opinion, these two men could potentially tell a great story owing to the fact that Bryan is a full-fledged heel that the crowd despises just as much as they love Balor.
Some even feel that a superstar like Finn Balor may be best served by going to SmackDown Live and challenging someone like Daniel Bryan. Balor may do better on SmackDown, the wrestling show than RAW, the sports entertainment show.
This is a match almost guaranteed to happen. The only question is when.