Even that you are keeping in mind the TCO is a great news!
And about the book - you are on the half in Chapters, but I suppose, not in the volume of work to be done! I've got some question about the plot - would the death knights storyline be reflected in the book? Something about their past, what kind of fighters they were before conversion, what missions they were doing during TCO (is was mentioned many times in the campaign) - as for me, the death knights in TCO is one the most interesting features (even if the main enemy is Xvareon).
I've just finished the TCO again, and was again impresed with Axobada's character - suppose that his story could be very interesting too.
Anyway, there is not so many bugs left and campaign is still 100% playable, but for sure I'm not the only one who is waiting for it's update. The fact that you stopped constant updates (I know the reasons) could be vital for the future of TCO as far as during such long pause I'm pretty sure you've obtained a lot of new ideas for realization. Anyway, thank you for your work!
Great that you are opened for a conversation!