I'm speculating and I have no freinds.

[Enla]

I missed that, what scene did we see his homeworld?

Iscah said it, it was in the fight with Midgardsormr during the Omega raids. So second fight of the last tier of those raids. We literally fight Midgardsormr as Omega remembered him, on what Omega recreated of his homeworld, for the entirety of the fight. You can tell pretty conclusively it's /not/ Hydaelyn because of the different cosmic landscape in the sky as well.



Hard to find screenshots that actually show the sky but you can see the edit of either a REALLY close moon or planet in this one to show it's a different planet.

I really do hope they bring Tiamat back though, it's always depressed me how her story never really got resolved. Especially with the fascinating tidbit in our conversations with her about bringing dead loved ones' back as primals that I was so sure was going somewhere given a certain scene that happens in HW but it never did.