I may be wrong but I’d guess it could/would be used for RMT. In that sense I think the system as it is now, is at least partially designed to combat potential abuse that way. But I know very little of the exact reasons and history of the housing market in FF14 From the little I do know, houses are valuable because of dearth, and being able to get specific plots would make it even more tempting. I think effectively it could drive prices up in game even further as a result.

I understand your wish, and it’s almost comical in a sense that FF14’s housing market reflects the state in the real world in many places. I think only ample supply, and only then potentially the option to trade, would work. But maybe I’m overlooking very obvious stuff!