The time machine idea with the son finding his father is a good one.
Mike Knox should get a Mortal Kombat-esque gimmick. Give him promos where he talks about fighting for his realm, and how our's will not be spared from his destruction. When he wins ten matches in a row, he will take over as General Manager of ECW until he is defeated.
Keep Kevin Thorn and The Boogeyman around. Stevie Richards should use the time-travelling tag team son's time machine to go back in time, and perfect his craft, and then show up in the present with multiple World Title wins. The WWE can go back over history, and get rid of the Champions they don't like, and replace them with Stevie Richards. Who defeated Triple H and Shawn Michaels at WrestleMania XX? No, it wasn't ______, it was Stevie Richards, winning his second World Heavyweight Title. His first came when he defeated Triple H in an Elimination Chamber at Summerslam 2003.
Stevie Richards can hijack the WWE Title reigns of Kurt Angle, Chris Benoit, Goldberg, Brock Lesnar, etc. Just those four would give him a count of about 13. He of course steals more, and the WWE can get big feuds out of it when Richards takes the titles of a guy on the WWE roster (maybe Kane gets pissed off that his one reign is hijacked by Richards), and then when he goes over 16, and holds more World Title runs than anybody, Ric Flair can get pissed off, and Richards can be all "No, man, I left your's intact because I respect you," but that feud can turn really sour really quick, and the two can have an intense feud.