I would eventually like to see Wyatt in the title picture. I think he's been around too long not to be, but given he has a program with Taker right now I think he can get a great rub from that.
I would like to see a tournament at Survivor series. Perhaps start it on Raw (so we don't have a guy wrestling 3 times in the same night) and set it up as follows:
Roman Reigns
Alberto del Rio
John Cena
Sheamus
Dean Ambrose
Ryback
Daniel Bryan
Cesaro
Have Reigns, Sheamus, Ambrose, and Cesaro all go over on Raw. Then have Reigns defeat Sheamus, and Bryan (or Ambrose) win at Survivor series. Setting up Reigns against either one (D-Bry probably makes most sense). During the main event have the Authority screw Bryan, giving Reigns the win and the heel turn. He becomes the Authority's new guy, fans are already booing him so he'll continue to get heat, and now you have programs set up naturally with Bryan and with Ambrose. Cena can go back to his time off, and you don't need to bring in Lesnar and either job him out or add more dates to his schedule by giving him the strap. You also preserve the Wyatt vs Brothers of Destruction feud.
Thoughts?
You don't bring DB back to have him job to Cesaro on Raw. As much as I like Cesaro, he's not positioned for going over a returning DB. If DB returns, he has to make it to the finals to keep the fans interested for the show.