I get the whole keeping the houses for those who are actually active but... why is there still a time limit to retrieve the furniture and the gil from the auto-demolished houses? Whose spot am I even taking if I lose ownership of the plot???
I would care a lot, lot less about auto-demolition if I can get my money and furniture back when I return, whether it's less than 75 days after last login or more than 2 years. And, while I'm not programming savvy, I don't see how would just letting the NPC hold the items and the gil indefinitely be a complicated task compared to creating private housing or doing a whole do-over to the system. Then again, we're talking about a company whose glamour system and plates are riddled with limitations.