I personally have absolutely no interest in any Undertaker storyline that involves Lesnar at Wrestlemania. At another ppv, maybe, but not mania. We all know that there are only 2 sensible reasons somebody will end the streak....1. To give somebody the rub and put them over big. 2. for the ultimate heel turn (such as cena going full blown heel and breaking the streak). The wwe has managed to put a little suspense in recent years with HHH going for it the second time. I thought maybe he could do it seeing he has an ego and the creative control, his ego may get the best of him. Then Punk, there was a small chance wwe was going to put him in the upper echelon of superstars by having him cement his legacy since he was so hot at the time and Taker has said he has no problem doing the deed if the time is right and it makes sense. Taker wanted Kane to go over him years ago, but out of respect Kane wouldn't do it. Lesnar winning makes NO Sense. He is a part timer, doesnt need the rub, and at the end of his career as well. I doubt we will see him after next year. you can only phone it in and have Heyman show up in his place for so long before it gets to tedious. That being said, a Lesnar win does nothing to move anything forward, its not like it would lead to a feud. A lesnar loss does a little for Taker, but hurts Lesnar even more. Therefore there is nothing to be gained from that match. Obviously, unless Taker retires the streak will go on. Unless he announces this as his last match (which I doubt he will seeing wwe has such a big interest in getting Sting for a reason) then there is no way the streak will end.
I would like to see someone like Bray Wyatt, Cena, D-bryan, or a dark horse....Antonio Cesaro. But to make me believe the streak could end, have the Undertaker put HIS career on the line. That would make it believable the streak could end, and all those guys have something to gain. Even Cena, but only if he turned heel, which I think he would have to for the heat he would get.
side note: if Punk was going to leave, I think he could have negotiated a HUGE payday and left in the good graces of wwe and the fans. My idea...He keeps quiet his intentions to not re-sign. Then he asks taker for a rematch, and to prove his point he puts his career on the line like Michaels, but he will do what michaels and everybody else couldnt because he has a lot of career left. Taker in turn does the same, putting his career up. Nobody would think a 30-something Punk is going to retire, as it would be more likely the 48 year old Undertaker was calling it quits at the 30th wrestlemania, which is a fitting ending point. So now it is believable the streak could end. Hard fought match but Taker wins. Punk retires like he wanted, gets 1 last huge payday, gets the main event he wanted and everybody wins.
if wwe gets punk back and pitches this to him, he may return. he would get his main event caliber match, a huge pay, and no need to address the storylines because he could say he left because wwe wanted him to fight a meaningless fight when he wanted to become immortal. Now that he has the match he wanted, he has his passion back and he has no intention of retiring. The story tells itself.