Okay, let's look at this again.
The one that is supposed to be kept within the land only is the [i]codes[/i], which is totally fine. But to have the [i]WP[/i] itself be confined to a land only? That's discrimination, and while it might not be the king's purpose, it will end up being a path to stocking their citizens up with WP rather unfairly.
I really don't mind if the King's own quest (a.k.a. their [u]personal[/u] quest) be for the citizen only, after all, with RPCs there were also some kind of restrictions at times, and Kingship is undeniably a role, so I guess it'll be okay for kings to make land only quests.
But, what about other people? The WP codes should be given only to quest [u]creators [/u]of that land, but the WPs themselves should not! I don't see anywhere in the announcement that the WPs themselves should be confined to a certain land.
Talking about discrimination? Let's use a simple real world example. Suppose you want to get a job, of course there will be discrimination based on your [u]skills[/u]; those who have the skills more suitable for the job will undeniably get an advantage and be more likely to get hired. That's no discrimination: that's the law of nature, [u]survival of the fittest[/u] (in that field). But when you are excluding people for their ethnicity, for example, that is [u]discrimination[/u]. And an unjust one I must add.
I really don't mind if kings set up their own quest for their people, or if you don't have the time, commission another person to make one for you (but limit to 1 quest per say, 2 months, or else you'll just be "commissioning" every quest maker in your land and all quests will end up restricted to your land anyways). But really, I don't want to start seeing "regular" people making quests that are bound to a land only, or sponsors (be it kings or other WP sponsors) give advantage to people from a certain land.
Keep the [u]codes[/u] inside your land. Not the WP itself.