#1 Brings something fresh in WWE

Looking at the current product of WWE, you will feel a sense of deja vu. WWE hasn't been able to produce a storyline, which the fans can stay invested into for months, although Kevin Owens' booking does look promising.
Samoa Joe winning the WWE Championship would be something which would spark interest among the fans. WWE would have a wider range of opponents for Joe to face. Moreover, they would also have a top heel as a champion, who appears every week.
Even though Joe is a heel, fans are behind him, so WWE can expect higher ratings as well. Joe's heel persona enables him to develop good chemistry with other babyface superstars, so we can also get to see some new faces like Ali, Cesaro, and Aleister Black in the title picture.
SmackDown Live is after all the land of opportunities. Joe winning the title will not only give the talented superstars a huge opportunity but also give them a chance to display their skills inside the ring and outside of it.
The two-time United States Champion is an automatic star and pretty experienced in the business as well. He can easily establish himself as the top guy on the blue brand if WWE gives him the chance.
Becky Lynch has been challenged HERE.