So yeah. I got my Mapper when I started a conversation with Dacon and said that I want it. He happily gave it to me and also the Mapper prefix!
But, I didn't get any gems too, but I think that now you don't get any gems for any maps. I don't personally give a f##k about gems, but if someone cares I think that best way to get them is to start a conversation with Dacon!
PS. None else than Dacon (Maybe Dylan) can give the Mapper rank for you, that's what Drakey said for me.
Hope this helps! ;)
Also, it's in wrong forum, now it's in "Map Sumbissions".