I'll keep it short and sweet with my opinions.
1. Kassius Ohno - Smackdown - KO's jobbers will his elbow to get over. You could legitimize it to be more like Big Show's WMD, and less like Santino's Cobra.
2. Richie Steamboat - Smackdown - His moveset doesn't deviate from being like his dad's, so you could perhaps air a several vignettes of his likeness to his hall of fame father. You can even have his dad accompany him to the ring. Then, to spice it up a bit if he gets over, have him turn on his father and say that unlike him, he will become a WWE Champion. His biggest ceiling is as a tag team wrestler, but that's all I got for him.
3. Paige - Raw - Vignettes of her Anti-Diva image, pretty much take Kharma's place in a less aggressive way (I miss Kharma), have her go over Kelly Kelly who fits the barbie doll image Paige is against, eventually put the Divas title on her in one of Raw's two minute Divas matches, and have her call it the Anti-Divas Championship just for kicks. She's attractive enough to get over, and plus the fact that she's British can give her the international following that WWE loves so much.
4. Leakee - Smackdown - Just introduce him one night, just another Samoan lineage, and perhaps make Vickie his mouthpiece. He has the look that WWE loves, so he's the type that WWE will bring up to just see if he sticks.
5. Big E. Langston - Raw - Vignettes that show off his strength, stress the fact that he works out with Cena in said vignettes (lol), and perhaps start him off as the muscle of a tag team. WWE likes color coding for some reason, and Kofi/R-Truth probably won't last forever, so sticking him with them would probably be a good idea. That, or if Mark Henry wants to make one last go of it, then create "The World's Strongest Tag Team".
That's my take on it, folks.