I don't see it happening. Reigns could become one of the top faces, but I doubt he will ever be as big of a star as John Cena. Cena's one of the biggest names in wrestling today as well as being on his way to becoming of the most successful wrestlers ever. Reigns is on his way to stardom, I don't doubt that. Just not to the extent that Cena reached. Somewhere along the lines of the success Batista or Randy Orton, I can see Roman Reigns achieving that amount of success when all is said and done. There's nobody on the current roster who could realistically take Cena's spot as the face of the federation. Maybe Daniel Bryan, but time will have to tell. Who knows, I could end up being wrong about Roman Reigns. I didn't think he would break the Royal Rumble eliminations record, which he did. I don't see it happening though. Roman Reigns is not the next face of the federation.