As time has passed I actually love how Taker's streak ended. I was one of those "it should never be broken" guys and was as stunned as everyone when it happened. But... That moment was something that took 21 years to create. To get to THAT moment where an entire audience was jaw dropped, the raw emotion of it all, it really was one of TV's finest moments in my eyes.
The whole argument of 'Brock is never there, he doesn't benefit from it' is irrelevant to me. Lesnar is the single biggest legitimate threat to that streak and indeed anyone he faces. Fact is if he couldn't break the streak, then who could? Whether Taker wanted it to end, or whatever was going on that day, Lesnar was the best person to do it because of his background and character.
WWE achieved something at WM30 that would be the envy to all TV studios, they created a real moment of pure emotion that so many other companies and shows can only dream of. Taker doesn't have a career after the loss like Goldberg did. Taker is not hurt by the loss, Brock is elevated by it without any risk of it all being for nothing as he will always be an established mega star.
Ending Taker's streak was a 21 year build up (albeit unintentional to begin with) that was perfectly executed. Will we ever feel that emotion again? Goldberg's loss was very short sighted. They wanted to shock, but the who/who/when was very poorly thought out.
But unless Brock Lesnar appears EVERY week, and is being primed to be the most dominant man in WWE, leading to an eventual WWE Title reign, then what is the point?
I heard that Brock's contract was up around WMXXX, and he signed for another two years. When he beat the Streak, I thought that maybe he was going to be full-time, and this was a way of launching him for a major push, but his pushes are stop-start, because he doesn't care about wrestling, only the Wrestlemania and Summerslam paydays.
If a new guy hadn't beaten the Streak, then I can think of one guy who it would have been fitting to do it- KANE!
I know that UT-Kane has been done at both WM14 and WMXXX, but they had Austin-Rock three times.
Kane would have been more suitable, since he was a character based around the Undertaker's origins. Being his storyline brother, and one of his greatest opponents, it made sense. Also, it would have made sense for Kane to don the mask again.
Maybe Undertaker should have come on Raw pre-WMXXX, and confronted Corporate Kane, and chastised him for what he has become- no longer the "Devil's favourite Demon", but a man wearing a suit- Triple H's bitch. Undertaker should ask where the Kane he used to fight was? This should anger Kane, and force him into donning the mask and going on the warpath. He would then defeat the Undertaker at WM, which would bring a fitting ending to the UT-Kane feud once and for all, and then it would give Kane more credibility in his feud with DB over the WWE Title (as Bryan has to beat the guy who ended the Streak to keep his title, making the threat bigger). But all having Brock Lesnar do it achieves is giving Heyman bragging rights.
For me, I would have had someone like Kane or Bray Wyatt do it, or have had HBK do it as WM26, and keep his career going.