Demetrious Johnson has heard the call to try going back to 135 lbs for potential fights with the top of the division, but fromt he sound of it, he's not answering the phone.
Conor McGregor may not have won his welterweight bout with Nate Diaz UFC 196, where the featherweight champion decided to move up two full weight classes to take on a late notice challenger, but it looks like his move did spark a conversation. Would other title holders be well served to look for big fights outside of their normal division? It happens all the time in boxing, but very very rarely in MMA.