Desks,Beds,Fish tanks,Tables,Lamps,Trees and you name it have a few things in common. They take up mog invotory space and give storage space, Maybe its time these items have a section of there own where there not taking up invotory space.
Make it so you can put in a furniture only invotory space where it doesnt take up actual Mog house space. From there add a 20 slot furniture Limit.
