Bryan cant come back and be Mr happy go lucky Cena jr. he really needs to be mr intensty. comeback completly different.
If Bryan is coming back near the end of the year, WWE should be smart and just make his storyline go to Wrestlemania. No point not doing that because they have a natural build for it then. They can wait on Reigns for another time. He's young and there's nothing wrong with him taking the title at some point earlier than Wrestlemania 32, like Summerslam next year. Bryan is the big star right now so they should go with the flow. This is where they messed up with Cena by putting him on Raw in 2005 when they probably should've waited another year or so. Crowd backlash happened quickly then. They can run into the same problem with Reigns especially since Bryan is the one fans want right now.
Lesnar beats Cena for the title at Summerslam.
Night of Champions, it's Cena vs. Lesnar vs. Batista. Have Batista pin Cena and take the title. That's a huge match to book, Wrestlemania main event worthy, and it's around when their subcriptions lapse. Lesnar will be gone until next year but still look strong.
Hell in a Cell, Batista vs. Cena one final time with Batista walking out the winner again.
Survivor Series and TLC are basically filler anyway so you can just use it to build more heat for Brotista.
If Rock returns, Royal Rumble can be him vs. Batista with Lesnar interfering and allowing Batista to win. This helps set up Rock/Brock which they were originally going to do at Wrestlemania 30.
Elimination Chamber, it's Batista vs. Cena vs. Orton vs. The Rock vs. Lesnar vs. Reigns. Rock eliminates Lesnar, Lesnar screws Rock.
Then from there, you have multiple options.
Either Batista wins and you have Batista/Bryan which has a built in storyline.
Rock/Brock, Cena/Reigns and you could even set up Rollins/Triple H which would be a good way to build up Rollins further to cash his title shot in the following months.
Essentially, if Bryan is returning at the end of the year or before Royal Rumble 2015, he should be one half of the title picture at Wrestlemania because fans will want that above everything else. He has a built in storyline against Batista, or a new one can be created against either Cena or Lesnar. He has multiple options but it needs to be one of those three he's facing.
I think Cena should be putting over Reigns next year, title match or not. It's clear WWE is putting everything behind Reigns, so Wrestlemania against Cena would be a good final test. A one-off match with Cena losing, and then you can build up to a re-match at a future Wrestlemania or Summerslam but they should do it like they did with the original Batista/Cena and Triple H/Cena rivalries. Only reserved for the big shows.
WWE needs to have the mentality they had back a decade ago which is that you need more than one guy. I'm confident Reigns will have a huge backlash if he's walking out with the title at Wrestlemania and Bryan is still around for that period. Bryan is still the most over star and even though he had his 'moment', it was cut short. I really don't think they need to wait to see the fan reaction because it doesn't take a genius to see what will happen come Wrestlemania season. Fans will be wanting him to do what he should've done this year, win the Royal Rumble.
Give Bryan his time, use the next year to bring Roman up there also along with Rollins and Ambrose. Rollins I think would benefit greatly from a slow burn turn against The Authority for Wrestlemania 31. His moveset and risk taking also works best as a face. It's an easy storyline to get him really over.