With the entire Sothera system and its many planets, species, and cultures to explore, it feels more like the traditional worldbuilding of yesteryear than the trope-heavy reference mush of Karlov Manor or Outlaws of Thunder Junction
With the lack of any additional Goblin support in MH2, I'm skeptical that it will find a place in the tribal deck, more likely serving as a top-tier mana dork alongside Noble Hierarch
There are a number of goblin pirates, too, so its also a flavor win
If you have an idea that you know should be a permanent but are stuck on the specific type, consider what makes the most flavorful sense
Dawnbreaker Charioteers is an unusual choice, but its a human and protecting it with Ephemeral Shields is really interesting since you can play and protect it on turn 4, and you get a heroic trigger when you protect it if they try to kill it