Well, there are several things.
Bring back y2J. The enigma 44
Said it best. If Benoit vs Jericho for the WOrld TItle occured we would all be gizzing on our keyboards. The point is both are excellent wrestlers, and Jericho has one of the best levels of charisma/mic skills ever. And in a way, Smackdown NEEDS Jericho.
Continue to push young talent. The pop, Kennedy and Lashley get at live events are amazing for not being world champions or former world champions. But WWE Needs to take it slow. I know they want Lashley to be their savior but..... He may end up a lesner. And of Course KENNEDY! is a huge star but I prefer him upper mid card for now.
Continue to push divisions. IF you look at SD! now, they have a decent-Almostgood tag team division. They are putting the Cruiserweight champ in a feud. The US Champion is in a near main event feud. They have a cruiserweight feud (Rey/Chavo) They have a upper mid card Finlay Batista, and of course Lashley and Booker. They have all bases covered. Just need more crerativity.