I don't think it's a good idea to point to somebody and say, "you're going to be undefeated at Mania because we lost Taker and we need the streak dammit!" It's too big of a commitment and too restricting when booking matches. Rather than forcing something of this magnitude, it should develop organically and then run with it after awhile. I know that's not likely to happen but that just means said Mania streaks retain their impact. Also, since I know Taker isn't, if a new streak does happen I'm hoping that one gets broken. Not that will be seeing something like Taker's streak for many, many, years, probably never again but my point is that things like these won't work if forced in my opinion.