Once you talk to Y'mera, you unlock more files about the Hal'hadar!
It seems like the ones we've been fighting under Leth'ir in 12.0.5 were *not* sanctioned to go to Azeroth by their leaders, so there's clearly other ethereals elsewhere still.
Portergauge 🏳️🌈
Ooh, the basecamps have consoles with lore info about the planets. I really enjoy seeing the impact of the Legion still present a decade on, makes me miss them lol
I'd love if those unknowns filled in the more we discover stuff through quests.
