#2 John Cena
John Cena has not appeared on WWE programming since WrestleMania 35, earlier this year. The last time we saw him, he surprised the fans by coming out as the Doctor of Thuganomics to roast Elias and hit him with an Attitude Adjustment.
There were several reports over the week which reported that Cena would not appear on the show, but now it looks like that Cena's appearance is a done deal. Dave Meltzer of the Wrestling Observer Newsletter tweeted earlier today, stating that Cena will be at tonight's show.
While it is unknown what Cena will be doing at the show, a segment between him and Elias would make sense, since Elias has a score to settle with the sixteen-time WWE Champion. Cena can even be used to put over another young talent, which he has started to do for the past couple of years.
John Cena's appearance will definitely add star power to RAW, and help WWE to boost their ratings, which should help now.