#4 Debut the New Ministry of Darkness
The Original Ministry of Darkness was a villainous stable formed in 1999. The faction was led by The Undertaker and its members included Paul Bearer, Bradshaw (JBL), Faarooq (Ron Simmons), Mideon, Viscera and The Brood (Edge, Christian and Gangrel)
They took part in controversial storylines which included Satanic rituals and sacrifices.
If the Undertaker is not fit to wrestle at WrestleMania, introducing the New Ministry of Darkness would be a clever move. The newly formed faction could make John Cena its first casualty.
The stable could be led by Aleister Black and their theme should be similar to the original, sans the controversial rituals and sacrifices.
I've discussed the faction in detail here.