Well aside from those guys the only others that I can think of that could of stood a chance would have been Andre The Giant Ultimate Warrior Vader Mick Foley Kurt Angle Bill Goldberg Brock Lesnar (That's 7 I Know) Nobody should end the streak Taker should retire undefeated but if anyone had to end it it should be Kane, not Cena nor Orton or Punk or any of the rest of the roster. Kane is the only one that should end it due to the fact that his character was all about destroying Undertaker so it be only Kane but I'd rather Undertaker retire 20-0.
I'd agree with your list, but if anyone was to break the streak, it would've already been broken.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.