Better map join selecting (I don't know if I spelled it right.)
If you are higher than an iron rank, you are able to select maps by armour stands in the lobby next to the join signs. Sometimes, the same map is a couple of times available. Like you can see here:
https://imgur.com/wFddQ32
You can join whether left click or right click, my suggestion is, if you click with your right mouse button, you can see all available games, like you see the map Mushroom is three times available, you press right click and you see all 3 games in a row, so you can press which one you want to join.
Why should they add this?
+Well, if you want to join with your party in that map, and the first one is almost filled, and you want to build something special or I don't know what you want to build, you can simply join.
+If you already joined the first one, and you see someone you are ignoring/hating joined it too, you want to leave, but you prefer that map, with this option you are able to join another game, the same map easily.
~Another unquality suggestion by Juskebat