We should have a true housing market
I think this would be a great way to help growing FCs establish themselves. Mine is having a hard time because we don't have a meeting place, which is what the house is. So instead of needing to buy a landplot and then a deed. Why don't we just buy the deed and then have to pay a weekly amount based on interior and exterior furniture. Put it this way it's 450,000 gil for a small building deed and 900,000 gil for the land plot. If it were set up the way I'm suggesting then only the building deed would be required to have a house.
Introducing a weekly fee for the house would cover the remainder of the plot deed, in this case 900,000. To deal with the weekly payment it would be determined by your furniture. The more you have the more you pay, but never more than original cost of the land. Example, let's say the default payment is 100 gil if you have a small house with 150 used furniture spots. Your weekly payment would be 15,000 gil. That would take two months to pay off.
I think this would help out as it's saving the fc money to put towards other things and adds a additional level of leadership to the fc. It would also bring players out of their houses to do fates if the house was still needing to be paid for, thus making areas more populated and not just filled with people atma grinding.