#4: Shawn Michaels
When Shawn Michaels returned to the ring at last year's Crown Jewel event, rumours circulated that the Heart Break Kid's appearance wasn't a one-off. Despite Michaels only having the one match, some fans speculated on the idea that Michaels could have a handful of matches in 2019.
If true, then the 24/7 Championship could be in the cards for HBK. Last holding gold shortly before his retirement in 2010, The Showstopper would surely be allowed to go at his own pace if he was to win the title, and would definitely be a blast from the past.
Shawn wouldn't even have to hold on to the gold for long, but seeing arguably the greatest Superstar of all time hold one more championship is something many fans have been pining for for years.