So I was kind of thinking about something,
The protection stones? I'm pretty sure some people enjoy having those, but what if there was a bigger ps? I mean, say if someone was to start a really big project by an ordinary person, member, or someone, and they were making a big special arena. But then a chunk of that project gets greifed? They would have to start all over.
So say there was a "Protection sign," and no one would be able to walk across it at all, except the owner and his/her friend, and it had a big protection radius, bigger than a diamond ps, and that sign could show you which areas are protected! Also for the other ps, sometimes you may not know which areas are protected and you have to count the exact spaces.
I hope this is a great suggestion, but if not, I'm not mad or anything.