#1 - This feud will help in restoring the old prestige of the WWE Championship
The WWE Championship was supposed to be the most prestigious title in the entire WWE. But in the year 2018, the title failed to main event even a single PPV (excluding the SD Live exclusive Fastlane). Even RAW's mid-card title the Intercontinental Championship was chosen over the title in absence of the Universal Championship. A non-title match between Roman Reigns and Samoa Joe was allotted the main event position at Backlash.
At TLC, we saw the SmackDown Women's Championship match main event the show, which shows the devaluation of the WWE title in the year 2018. WWE should work on this in 2019 and restore the title's prestige. And they can start working on this right from the Royal Rumble show by having Cena and Bryan fight over the title.