Its it pretty realistic, I can definitely see most of these matches happening. First and for most; Brock vs. Rock, has been buzzing since Brock's return, I can definitely see this happening, and since Brock beat the Rock last time they met, it will make it even more sweeter for the Rock to win the championship off of him. I would love to see this match.
I can see Undertaker taking on Cena, but they would really have to sell that fued, because, Cena doesn't have the best track record at WM therefore Undertaker's streak doesn't seem in enough danger. If Cena gets a persona change, this may work out, I would definitely like to see that. I can't see Stone Cold making an in ring return anytime soon, and especially in a match with CM Punk.
CM Punk is doing a great job at being a face (good guy) the WWE shouldn't rush into changing that anytime soon, and since Stone Cold was one of the best Faces of all time, I don't see this feud as possible, at least not for a while. The MITB match seems very plausible, a lot of mid-card superstars, although a lot of under achievers in my books. The WWE should consider opening the MITB match to some veterans as well and not just new talent, to add some attraction to this match.
Personally, I am not into Wade Barrett or Sheamus, and I would be surprised if either of them could have an attractive enough feud for me to actually want to see this at a WM. I can't see this being in the card for WM 29, and if so, I will definitely not be watching, simply because I can't get into either of them as entertaining. I am a huge fan of this Big Show and Kane match-up.
They both have great WM moments, and this would definitely add to that collection. I think it would be even better if it were a specialty match. As much as I hate to say this, the WWE has ruined the Tag Team division.
It's not even remotely exciting as it was in say the Attitude era. Think of it; The Dudley's, Edge & Christian, The Hardy Boyz, it was thriving with exciting teams, now I can barely name 2 teams. Which leads me to say this match doesn't bring much attention or attraction.
I would love to see Rey Mysterio preform at WM but not in a tag match. Unless they make this a specialty match or the WWE decides to utilize the tag team division better, I can't see this match going over well. It can possibly be used as a dark match (a match before the Pay-Per-View begins).
I can definitely see Kharma as the champion during this time, but at WM the WWE usually showcases their most successful and attractive divas so, I am not too sure this would be too successful. Unless they focus more on the in-ring ability and less on the attractiveness on the competitors, this could be plausible. Overall, I like your card very much, with the exception of the Sheamus vs Wade Barrett, and the Tag Team match up.
If Stone Cold does make a return, that would be one amazing WM, possibly one more Stone Cold vs. Rock feud, would be amazing, so maybe add that into the card.
These guys will be main event players by then, otherwise its decent.
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.