Faces. Faces faces. Agile ones, hopefully. SD is overflowing with young, vibrant heel talent, but only have 3 or 4 at most legit faces that have any sort of relevance.
The main fish should be Orton. He should be the centerpeice, the guy who carries the show. He is the most over guy in the company, just ahead of Cena, and they aren't going to be moving Cena, so its a waste to have them on the same show. I would say Triple H when he returns, as I loved his last SD run, but the guy is too old and beaten down to be the main guy on a program.
in the mid card, I would love to see Daniel Bryan, John Morrison, and Evan Bourne, although in all likelyhood, you will only get to have two out of the three. I would much, MUCH prefer to see Bryan go though, as on SD the focus is more on the matches than everything else, and the guy is an absolute pleasure to watch. He also has a TON of guys who he could put on fantastic matches with, like Christian, Ziggler, Mcyntire, Punk, Cody Rhodes, Rey Mysterio and Jack Swagger (my goodness, can you IMAGINE the possible matches with Swagger...)
I also truly belive that on SD, at some point, you could see Daniel Bryan possibly have an underdog WHC run, or at least a program towards it. The WWE seems much more apt to experiement with things involving the main title on SD, and apt to allow guys to flourish.
So mainly I would love to see Orton, Bryan, Bourne, and possibly Kaval from NXT go to SD. Between those guys, I truly think you have a TON of match and rivalry posibilities. Yea, they are all faces, but as I said, SD is already LOADED down with heels. If were to HAVE to select two heels to join in, I would go with Jericho and Husky Harris from NXT. I love Alex Riley, but feel his gimmick is far too simular to Swagger's gimmick to have them on the same show.