Ok so if I don't want to use it, and don't plan on checking the claim threads, how am I to know what everyone have claimed so I don't step in on their territories?
To avoid problems we need to have a system we can all agree on, and I think the current system isn't good enough, with support of my 5 point list.
Of course we don't have to take this so seriously. As long as people understand that misstakes can happen in an inprecise system in that case and be understanding if a new castle appears in their backyard.