#4 Call up Nikki Cross
When Sanity was called up to SmackDown, there was one member that was noticeably missing. Nikki Cross stayed with the NXT because she was a incredible challenger for the Women's Championship.
Her character is more unhinged than her fellow Sanity brethren, so her addition to either roster would be a welcome change since she is so unlike anyone else on either brand. The simplest idea would be to reunite Cross with the remaining members of Sanity and have her as a part of Smackdown's women's division.
From her initial debut with the faction, Cross's energy, personality and character were unmistakable. It would also lead to potential matchups against the likes of Peyton Royce, Billie Kay or even Carmella. This is something WWE may want to consider doing before 2018 draws to a close.
#3 Have Daniel Bryan win the WWE championship
One of the most interesting characters on Smackdown is Daniel Bryan. He returned to the ring at WrestleMania and since then has been slowly integrated into the roster.
His program with Big Cass left a lot to be desired, though that had little to do with Bryan and more with his opposition. His feud with The Miz has been a terrific opportunity for fans to see his passion as he's continued to jockey for position against the A-Lister during their feud.
Bryan is the number one contender for the WWE title after he beat the Miz at Super Show-Down. The WWE Universe wants to see Bryan win the WWE title to show that he is the underdog that can defy all the odds.