I've been going back and forth today while at work with my brother-in-law about the potential Conor and Floyd MMA bout. While we both agree that chances of the fight happening are slim, he seems to be in the majority that McGregor wins by a landslide and I just don't see the fight happening that way. I think Conor is way too fucking cocky to immediately start throwing in Muay Thai/Wrestling/Clinch/any other aspect of MMA outside of boxing and will keep it standing. He'll keep it standing and despite not being heavier boxing gloves, Floyd has his way with Conor (again). Keep distance, keep speed, pick him apart, and aim to embarrass him in the cage. The biggest factor would be kicks which again I think Conor would come in with something to prove and would only throw in absolute desperation.
Of course this is all strictly hypothetical and the politics behind making this fight happen would be astronomical...but it'd fun as shit to watch!