There have been many cards that I've seen, some realistic, some not, so to keep this short and sweet, this may actually be the most unique card to date but, here is mine:
John Cena(c)w/Bret Hart vs. Batista w/Vince McMahon
This will most likely happen, due to Cena winning at Elimination Chamber, and since Cena called Vince a "coward", while Batista attacked Bret there will be a huge angle. There is also a rumor that Cena and Batista will feud and have a match at Wrestlemania. There's also a strong rumor Bret and Vince will fight at Mania, but due to injuries, Bret cannot compete in an actual wrestling match, so I see him and Vince being the managers of the gladiators, Cena and Batista.
World Heavyweight Championship:
CM Punk(c) vs. Edge(2010 Royal Rumble Winner)
Surprise, surprise, I see Punk winning the Smackdown EC, in a shocker. I cannot see Edge feuding with Taker due to the fact that WWE wants him face, and he'll be heavily booed if facing Taker at Wrestlemania. Due to the fact that EVERYONE is constantly awaiting Edge and Jericho, it will not happen. I can picture him facing Punk, a top heel, who draws the most heat in WWE, behind Cena of course...
Streak in Jeopardy:
Undertaker vs. Shawn Michaels vs. Triple H in a Triple Threat Match
Undertaker is just a thought, but I somehow feel he'll be involved. Triple H will not walk out of Elimination Chamber Champion, and Michaels will want Undertaker. Due to recent frustation, Triple H says he wants in, and he'll be thrown in the match. A main reason would be, Shawn turned his back on Triple H one times too many. This should be a classic...
Battle of the Brands:
Sheamus(RAW) vs. Rey Mysterio(SD!)
Sheamus will not beat Cena at TLC, Orton at the Rumble and win the Elimination Chamber, all in one reign. So where will Sheamus land? He'll face Mysterio in a Battle of the Brands match. There was a rumor of Mysterio facing Punk in a "hair or mask" match, but I don't see Punk losing his hair, and I cannot even picture Mysterio losing his mask. So most likely I see this match happening...
Randy Orton vs. Ted DiBiase w/ Cody Rhodes as Special Guest Referee
With the current conflict going on in Legacy, I feel Orton will feud with DiBiase, leaving Rhodes outside, but not OUT, so he'll be Special Guest Referee. Ted will eliminate Orton from the Elimination Chamber, with Orton later on costing Ted in the Chamber. In three weeks, Orton will challenge Ted for a match at Wrestlemania, with Cody as Ref.
Christian vs. Chris Jericho
This could be a HUGE sleeper for Wrestlemania. I feel when the new show will air, Christian will be moved to Smackdown, and with Jericho left out of an opponent, Christian will come out and interrupt Chris, and set up a match at Wrestlemania XXVI.
Triple H vs. Shawn Michaels
Sheamus vs. Undertaker
Edge vs. Randy Orton
Rey Mysterio vs. CM Punk
Edge vs. Sheamus
Triple H vs. Sheamus
Chris Jericho vs. Edge
Undertaker vs. Edge
John Cena vs. Undertaker
This is only a "Maincard" prediction, so not involving the Diva's match, Money in the Bank, etc.