I am not sure if this is technically possible. I'm sure the tools are there but i'm not sure if they can be configured to do this. First create a house for all house plot sizes, design the house to include furniture, not over done, old style UO. Place some chests and cabinets and allow for some loot to be placed, either draw from another system or place things like an SoS or a treasure chest or a lock pick box that you would find in a dungeon. Then, allow the system to search the shard and as it finds available spaces for the largest house possible, have it place a house and immediately start the timer of decay. So, now the system places houses that begin to decay. This would be visible on the sign. There could be a dev name, for example: Cal's House. So, maybe he could personally design a house, throw in some furnishings and these things would start popping up all over. So, this would do 2 things. It would keep the shard filled with homes, it would keep them kind of random and it would give people an opportunity to find a place where they could find a home. Right before these houses fall, they could begin to spawn different mini champs that would begin right before the house fell and some time after. Every now and then the house could have a special item inside that would make it worth going to these events besides the few pieces of furniture and unique chests.