#2 Giving the boot to Dean
A reunion can be either positive or negative. In other promotions, there have been instances where members of a faction laid waste to a leaving member just before he or she left the company. The Bullet Club ganged on Adam Cole and kicked him out just a few days before he departed from Ring Of Honor.
Similarly, WWE could book an angle where Dean Ambrose would be judged for his actions and words by his former best friends. Seth Rollins could always use a mini-feud between now and March, before his feud with Brock Lesnar elevates to a new dimension.
Will John Cena beat Ric Flair's record? A former WCW Champion thinks so HERE
The beauty of such an angle is that Reigns does not even need to be involved in a fight. The big dog can act as the jury and the judge, whereas Rollins can act as the executioner.