Undertaker’s gimmick

Do you think there is any chance that Taker is passing on his gimmick to someone else at WrestleMania and they are facing Cena instead? Imo a perfect candidate would be Aleister Black.  I think an exact copy of Taker would seem like a rip-off but someone who
could make the gimmick their own wouldn't be a bad idea.

Yes, it would.