Of course I don't.
I always introduce myself to coaches and Captains by my christian name. Once the game starts though, they all just gravitate to addressing me as "Ref" (which is how it should be).
I certainly don't want any players on the field addressing me as anything else (apart from maybe the two Captains since I've told them my name
).
"Familiarity" like that can so easily be misconstrued. If you have one team that you've never reffed before hearing, the other team's players calling you by your first name, what do you suppose they'd think?
You're there to do a professional job from an objective point of view - not make new drinking buddies!!
The respect thing is a two-way street. I show it to them by using their names (if known) and they reciprocate by addressing me as "Ref".
Why anybody would think the players should be addressing you as anything else is frankly, beyond me ...