I'm a little at a loss as to why infinite wards is infeasible? It doesn't seem like it would be THAT much of a size/hardware constraint but I definitely know nothing about making games so perhaps it is? It's not like the houses stay while you log out anyway, they are like dungeons where you get kicked out if you log out in them...

I mean, I'm on a world that has tons of open housing anyway but it seems this is a huge problem for most players...