I think the decay speed is somewhat reasonable right now, most of all if we forsee worlds lasting longer and longer with the aim of a persistent world.
Most likely the decay part is very much bounded with general and server perfomances, so there is some kind of tech limit to take in mind.
Jubal_Barca wrote:Having some explicit "there was a building here but it collapsed/fell down" objects that replace a few of the basic buildings might be quite fun, as basically things you can loot for supplies or maybe which have a percentage chance of a grumpy abandoned household spirit nesting in them that you need to placate or whatever.
Very nice! Peculiar buildings for ruins .... a boss fight with the stats of the previous owner and that jazz ..... would be very interesting, and much better than dungeons, that I dislike and I don't consider they fit the game at all.