The current situation is that you can own land (and pass it on to countless generations), and even if you do nothing to it, the value of the land may increase d

The current situation is that you can own land (and pass it on to countless generations), and even if you do nothing to it, the value of the land may increase due to the rest of the economy, or if the people next to you build skyscrapers, etc. That's doesn't seem fair, or productive, so I think the land itself should be owned collectively to some degree, but you would still own your improvements, and even 'own' the land in the form of a lease or whatever.