I expect land plot prices to at least double, current pricing reflect the economy as it was years ago. Since then the average Gil per player has increased substantially. I don't think this will fix the housing Mafia either, there are players out there who would spend 250 m on a large just to get someone to relinquish. There are only 3 larges per ward and you're up against thousands of players, many whom already pay over what they're worth from the server via reselling exploitation.