#2 Building up a strong faction
Truth be told, The Shield's reunion following SummerSlam has not picked up well. They bring a certain intensity for sure but the regrouping seems extremely forced this time around. Only generating more revenue from their merchandise selling can't be a good reason to let them team up week after week.
Rather, Braun Strowman's 'Dog of War' have huge momentum on their side. Just imagine how strong they would be if each one of them shows up on post Hell in a Cell Raw with gold around their waists.
Putting over the team comprising Strowman, Ziggler and McIntyre would not be such a bad idea after all.
As for The Shield, the officials will have many forthcoming opportunities to let them stick together, given that the time and storyline is right.