Goblins are for purging! Pathfinder allow Goblins to be heroes because there is the context of then being able to absorb civility and culture from the major cities, even if they behave a little weird, they still will be able to follow laws (if they are not Chaotic X), don't do harm and such.
I admit that my Faerun knowledge is very outdated since 3.5 lore, did they add any new piece of lore content where the goblins where able to culturally merge with the major races to establish trade, treaties and so on?
