I checked and only found two (recent-ish) suggestion threads regarding this here and here, one being rejected for dynamic goblins and the other archived with no action taken.
My suggestion is to open up more model options for the playable Goblin PCs. As it currently stands, they have six selectable options that are terrible. With the addition of HAKs, we've added some really nice goblin models to the NPC creatures around the server that I feel would be fantastic for player characters. I believe the Cold Moon goblins use some of them!
Please, I really want to play a goblin, but I can't move past their existing models being so...ugly.