#4 Potential character shift

There's quite a lot you can do with both Bray Wyatt and The Fiend as a character now that we know there's a 'split personality' element to proceedings. WWE doesn't just have to exclusively stick with The Fiend, and instead, they could open up the door and let in multiple other characters, expanding the Wyatt Universe to the point where nobody knows who he's going to show up as from week to week.
If The Fiend ends up losing the Universal Championship within the next few months, Wyatt could go on to promise us all that we haven't seen anything yet. From bringing other disciples into the mix to just generally going very 'out there' with the sort of characters he creates, there are plenty of reasons to get excited.
Cody has no chance against John Cena? Details HERE
Maybe The Fiend will be a standout member of the roster for the next decade or so, but something tells us that his persona just won't translate well over a long period of time as The Undertaker's did for so long (and continues to do).