Ping meter feature
Most games now when you join a server have a ping meter next to them, this shows how many milliseconds i believe the signal from your computer takes to get to the server. So when you go to the server tab in the menu and add a server next to it it shows the ping. I think this would be a good addition to minetest. also when you join the server you can press TAB and it shows the player names and their pings next to them. Another feature would be an ingame voice chat where you press say the X button and you can talk to other players using your mic and they can also talk to you. you could also have the option where you could mute players so you cant hear them talk.