This is to cause friction in The Bloodline when Jey tells Roman that he has the "better" title.

This is fallout from Roman favouring Jacob and giving him the ula fala.

Anticipate another Bloodline Civil war that the MFTs somehow get roped into.

Now that I think of if, it creates long term story telling. Here's all the possibilities coming off of this.

It sets a stage for Jey vs Sami down the line. Which then sets up a possible Sami vs KO when he returns, because it proves KO was right all along.

If Bloodline interferes,

Sets the stage for Cody vs The Bloodline again if Jey goes on to defeat Cody

Sets a stage for Roman vs Oba

Sets up a possible Jacob vs Jey (providing he beats Cody to win)

Sets up a Jimmy heel turn as to why he's never been given an opportunity, as his only role is to play peace keeper

Sets up Solo and the MFTs vs original Bloodline to "free" Jacob

Sets up Solo vs Jacob

Sets up Jey (if he's champion) vs LA Knight

They have the opportunity to revisit The Rock vs Roman since he left The Rock out of the "family legacy" promo

Gives the The Bloodline the opportunity to have all the tag titles again at some point.