I don’t understand why they don’t implement a #%@$ing building piece/placeables limit already. 5000 pieces per player, increased by 1000 per person in the clan would be a good start. That is plenty to build what you need.
If you have a hundred thousand pieces placed you are an absolute cancer to this game and community - go build your gridsquare-sized “castles” and “towns” in singleplayer where you’re only lagging yourself and not every single person on the server.
Unfortunately rather than setting an item limit, Funcom keeps giving them more toys to lag the server with: the latest is Taverns. I’m sure when they were conceived they didn’t realize that these morons would place 50 extra chairs around their tavern and build a tavern at every single outpost, spamming already overloaded servers with hundreds of pointless NPCs.