Short answer:

It would be so much better than it is right now..

Long answer:

Raw will be a 2 hour show Smackdown will be a 2 hour show

Main event and superstars will be cancelled - no one watches it. They will be be replaced by a pre-show that can be watched on WWE Network

Trips will tell kevin dunn to go fuck himself and fire him. (Triples will also give him a dental care plan as a part of his severance package - just to take the piss).

He'll make Cena and Reigns top heels. He'll put them together to make a ultimate heel tag team. Their heel turn will be a result of Vince retiring and they'll play along the lines of how Vince gave them the championship and how Vince didn't listen to the fans.

Dean Ambrose turns heel and betrays Seth Rollin (who turns face). They have a feud.

The Club betray AJ Styles and join Cena and Reigns. This creates a new feud. Finn Balor helps AJ styles.

Owens and Zayn will keep on fighting.

Cesaro becomes IC champion and starts a feud with Nakamura

US titles become defunct. The cruiserweight title comes back.

I could go on and on...