Rather than create a new thread, I'm going to give this a gentle nudge since there's new lore brought to light that further adds weight to the idea of a playable Garlean Pureblood in the form of the Reaper job for Endwalker.

Namely that the job came to exist as a result of Pureblood Garleans making pacts with Voidsent to survive after being cruelly driven from their original homeland and into the bleak frozen wasteland of Northern Ilsabard. Given that the Warrior of Light will also be making pacts with Voidsent if they pick up the Reaper job...well, it further erodes at least some of the proposed opposition.