Or would you prefer them not to dive into that? If they're serious about this group, and showing its dominance, why not eventually put them in the title hunt? They can be the group to take it off Cena, and play on the numerical advantage as to why they beat him. It would be booked as if Shield see the title as theirs, and not one particular member, but eventually you could use the title as the main prop to tease the split. It can be Shield vs Face, and the greed of one particular Shield member (or two) is the reason they lose, and then they play on that tension to end the stable. What do you think?