PVP servers are really not a good solution.
You'll start to see much more commitment to pvp balance and resources toward developing it, if they actually give those servers.
Just because it'll huddle all the PVP-ers into their realm doesn't mean we won't be affect by such change in direction.

Please, no.

I don't hate duels. I even find them fun.
I'm not even against this request, to be clear. (Not all of it, anyway)

But I could do without it at the same time too.
I don't mind PVP, but it brings out the worst in people.

I think the best compromise would be to have an instanced 1v1 arena.
If that's too hard because you'll run out of instances when people want to duel a lot (probably only at the start though), there's an alternative.

It could also be something like WoW's Brawler's Guild except 2 people sign up to duel.
You guys wait to use the non-instanced arena and people can watch the match too.