May I make the radical suggestion that more than one thing can be found in the same direction?
But seriously--as I see it Xaleris is right next door on an easy pathway, relatively speaking--Thri-Keen land is a long, arduous voyage by the Nistadani, who seem to be (along with the halflings) the big naval power of Eyros.
Also--Xaleris
might have been a naval power at its height, but these days, it's sort of fallen off.
And now the contribution...
Lately Eyros, and the world in general has seen--if not a flood, a steady trickle of young Xal leaving their homes to spend time abroad. Most who do this do it to escape Xaleris's stultifying atmosphere, and dolorous, inflexible religious customs. Many of these young people have come to doubt the Xal's faith in the Mother, noting foreign priests do just as well worshiping different powers, and even those who don't are filled with a sense of confinement in their native land. Thus they come to kick up their heels and make their pathways. For many, their time abroad is a dream, a time to drink of a freedom they would otherwise never experience.
From an Eyrosian perspective, of course, it is a political nightmare. The Xal are foreigners, unfamiliar with Eyrosian law and custom, and thus bound to cause trouble--however, those that arrive are usually high enough in Xal society that simply kicking them out would cause a great deal of bad feelings. Worse, quite a few are sorcerers, whose rather casual attitude towards their powers is a great contrast to Eyros's tight regulation of arcane casters, a fact that sends the Praes Thanatos and the Arcaneum into fits. They continue to suggest radical, unrealistic solutions to the "Xal problem" and launch into epic speeches where they mention "the Herewald situation" as demonstrations of what happens when Xal sorcerers are tolerated. Many Senators have taken to napping during these speeches, as very rarely does any new material come up.
Of course, there is another aspect to the Xal expatriates that has people worried--some are spies and agents of the Immortal Emperor, there to gather information and destablize things in Eyros. Presently, the largest number of agents have been sent not by the present Emperor, but by his Beloved Predecessors Onyx Turtle, Amber Locust, and Silver Hound to locate and take care of the present Emperor's missing sister, who they believe to be hiding somewhere in the Dominion.