Like its been said, they will be a Punk stable, help him keep the belt. Maybe eventually work their way into some tag title matches.
But when that stable breaks up, its going to be great. Rollins vs Ambrose feud over the IC in the next year or so. Reigns has the look of a heel, but his background could make him a better face. Maybe Ambrose and Rollins stay together and Reigns/Steamboat become a sons of old school tag. Theres some potential there.
Plenty of room on the roster. They need faces badly, because they have a ton of people that are better heels. Ambrose is nothing but a heel to me, Rollins and Reigns could go either way. Without ever mentioning his background, Reigns has the look of a heel. Even though his Dad was a heel, I think their kids get over as faces easy. Which is why Dibiase, Henningand Harry Smith are mysteries to me.