Why
not stretch it out into some sort of grand conspiracy theory?
SE made it clear that Raubahn could be trusted as far as the Scions are concerned. Ilberd was a a long time friend of Raubahn ...
Anyway, the key issue for me is:
Why can't Wuk find enough support at home, and therefore has to come to foreigners like us?
What do her own people know about her that we don't?
Also, note the character of the Scions on Wuk's side versus the Scions that aren't. The ones with a lot of experience with subterfuge and plots (Thancred, Urianger) are no joining Wuk's cause. I think that says something.
On a differnet note: In an earlier post somone mentioned the mystery woman at the top of the heap-of-characters in the Dawntrail poster. In the Endwalker poster, Hydaelyn occupis that spot; in Shadowbringers poster it's Ryne. Conclude whatever you like from that.
Furthermore, Erenville is left-top, which is aprociamtely where Zenos and Emmet-Selch are in the earlier posters. Conclude what you like from that too.
Poster Links:
ShB | EW | DT