*As creator, this is an essential feature to me, especially when working with non-organics such as buildings, streets, and man-made structures in general. Having to go into the menu to manually set xyz dramatically brings me to a grinding halt while working. It's also essential that this feature be available while in using an HMD.
Being able to copy/paste coordinates is also a huge help. This is a significant reason many of us who also work in Secondlife use 3rd party viewers like Firestorm.