Really creative faction!  I'm glad to see someone taking on the challenge of Ruins.  In games without the Vagabond or Hundreds, I completely forget they exist.  Turning destroyed buildings into more Ruins makes a lot of sense thematically, and is a great way to keep this faction engaged with the board after the original 4 Ruins are removed.  I think they'd have a really interesting gameplay loop with the terrace/Ruin interactions.

Is there a way to remove cards in the Demands columns?  From what I could see, cards get added through Serve or Beseech, but I didn't see a way for them to be removed.  That makes it seem like you could get a huge number of actions on a single turn (e.g. on turn 10, do I have 10 cards in each column from Serving, plus whatever I've Beseeched throughout the game?).  For most factions, I'd be afraid that this would overwhelm the board, but I'm actually more concerned that the Hosts won't be able to do most of these actions and suffer significant penalties.  But maybe I missed something with how the Demands are handled?

I loved the mechanic of the Demands. I think that the mechanic of having basic actions generating more powerful actions (Demands) that are also an objective with a penalty has a lot of potential. 

On the other side, I didn’t grasp their play. For example, I can’t see how they can move outside of the knowledge demand so unless I’m missing something, they are always constrained to the ruin clearings.