Observer Configuration

When right-clicking an observer, a menu could pop up that would let you change how the observer works. The menu would let you switch between how the observer currently works and detecting blocks or entities. At default, you would be able to choose specific changes within a certain block if you wanted, or keep it as-is. When switching to block/entity detection, you would have the option to switch between blocks and entities and then choose one from a list that contains every single block or entity respectively. You would also be able to change the distance that the observer can detect changes or entities/blocks at. Maybe you could even have it detect something through another block, which would be very useful! This could be used for remote defense against monsters or players, automatic farming, and many other things. I hope you consider adding this as similar features have been requested by others many times in the past.