Spoilers regarding the Elimination Chamber, for #1 Contender to the World Heavyweight Title, made on Smackdown.
With the idea of all the participants being "former World Heavyweight Champions" (that are active, and not involved with the WWE Title), the match makes a lot of sense, considering WWE's usual booking.
Del Rio/Big Show will be facing each other for title at the PPV.
Sheamus/Daniel Bryan/Randy Orton/Kane/Jack Swagger/The Great Khali will be in the Chamber match.
Of the other "former World Heavyweight Champions":
-Ziggler didn't want to be in the match.
-CM Punk and John Cena are involved with the WWE Title.
-Mark Henry and Christian are injured.
-Chris Jericho just returned, no point having him in the match without Ziggler.
-Undertaker hasn't returned/appeared this year, yet.
-Triple H, Shawn Michaels, Edge, Batista, Booker T, and Goldberg are retired.
-Jeff Hardy and Kurt Angle are in TNA.
-Chris Benoit is dead.
Only change I'd make, is having Rey Mysterio, instead of Swagger. Plus, he did defeat Swagger for the title.