In order to prevent abandonment and prevent rich people from just gobbling up a bunch of plots, there should be a upkeep cost on renting the plots. The player must repay this upkeep or relinquish the plot. Plots should also be relinquished back to the rental pool if a player has not touched to plot, say for 5 days or so.

I know player housing is coming out soon too, but it is unknown how much this will cost. Considering a private room costs 300k, a whole house would probably be out of reach for poorer players. A community garden will bridge the gap for newer players, poor players, players who want more garden spots, and players without a FC or in a FC too big to allow everyone to garden.