Firstly I understand that this is purely to drive the story however, a simple Ascended asks for an audience for a king who was trapped in The Maw since being abducted and walks in alone without the aid of the player (champion) and The Archon or any of her advisors don't have any suspicion? Plus the look Sylvanas gives you can now see she is clearly thinking twice about what she's doing and the direct comparisons between The Lich King and The Jailer shes's perhaps catching on, which means the attempt at a redemption arc even if we kill her.
The writing seems to be getting worse imo but its beginning to be a good expansion overall.