Since the poll thread is kind of useless, I would like to have a better discussion on this topic.
Basically, I like the ability to have duels but I understand the reservations people have.
I would suggest that duels be allowed under these conditions:
A ) Not allowed in cities. Duels cannot be requested while within the boundaries of cities. There are enough people in these zones and we don't need tons of players battling it out in the streets. I admit I'm one of those people who likes casting heals in cities for no reason on occasion while waiting on friends, but I try to keep that in lower population cities so I don't bother people who are already lagging.
B ) Duels cannot be requested unless you toggle a duel "flag." Guild invite spam is bad enough. Duels would worsen this if no system was in place to prevent it. Simply make it so players cannot request duels to other players unless their duel flag is manually set to on.
This is of course for open-world dueling, and the other option is to make dedicated locations with more constrained mechanics.
Edited by jrgray93 on July 10, 2014 3:38PM EP: Slania Isara : Harambe Was an Inside Job