What you're seeing right now is a result of WWE's lazy booking.
WWE has done the same old Hogan/Cena booking of having one guy beat the entire competition. They are lucky Samoans have a lot of great wrestlers so this whole Samoan storyline saved their asses cause it draws money, considering how fans were booing Roman as a babyface big time before that.
Only less than a year ago did they finally start developing some of their future stars. Gunther looks like he'll definitely be the main champion in the future. They are doing something with Austin (still far from being the main champion). I guess Bron will be incorporated into Raw/Smackdown roster at some point.
But right now most of the roster does not compare to him, and they are afraid to make Roman drop the belts because they overbooked him so hard they fear whoever (Cody, Jey or whatever) dethrones him will lose fans support pretty fast. Cause they spent so much effort on his storyline, while half assing other wrestlers storylines. And now he's taking vacations again. No show in Puerto Rico, meaning they won't see the main event and instead it's gonna be a reggaeton superstar vs damian priest