Yes! I have interacted with one of these on the Your Land server and have to say that an actual shop keeper NPC that can produce items for it's own inventory if it has materials available and causes less lag on the server than other shop interfaces is a brilliant addition .
Coming from the world of that other voxel game I was so relieved to see a WorldEdit for Minetest too. It offers the tools I need to get things set up and working for my world in record time. Thank you so much!
Before, I was posting a bounty and asking players to mine out and turn in any unknown blocks they come across for a reward. A process that was both time consuming and irritating. Now, my admins and I can simply got to the location and issue a command to make the ugliness go away. We still offer a reward for people who discover deposits of them and let us know though. But this way is so much nicer. Thank you! :)