I've spent my time continuing through, and then finishing my first run on the new Suzerain DLC.
Had a good time with it but I think it's maybe not as.. fully thought out as the games OG campaign was. That said, I'm definitely going back to it at some point because I made some frankly awful decisions and it all went wrong very quickly.
I was a bit worried about how well the Steamdeck would handle it but I actually found playing with the Decks touchpads to be preferable to the games gamepad mode.
Joking aside, the scene where Tywin schools Joff on how no true king needs to say that he's a king is peak GoT. Absolutely incredible writing, acting and production from all involved.