I suggest that Moderators inform players in the nearby area of when a butcher is going to occur, like the auto restarts. It gives players a little time kill their mobs they spent time on trying to spawn and to me that is not fair. I do realize that it lags the server, but there should be a warning given. I spent a lot of time looking for some cows in mining world, I finally found, breed them, waited for them to grow, then poof they're gone. All I needed was a few minutes. My personal time frame should be a 5 minute warning, then butcher. Anybody looking at the screen will see this and then kill their mobs.