Cagethrowers for sure.
Getting some of those made encountering FB much easier for me, so gobs should have those.
What else?
- sacrifice prisoners to their dark gods.
- have some body transformation of gobs intro trolls/ogres perhaps? I would say they bring them in sieges, so let them attempt to do this with some chance (% chance)
if they fail - goblin attempting transformation will be changed into hostile goo or some random sheep or whatever.
Would be nice to tie the two - similarly to "nature hates you" back from 0.34, the more sacrificed prisoners the greater chance for successful transformation.
Of course transformation are limited to lore friendly types. No flying, web and dust spewing giant blood drinking bats etc.
Come to think of it, this could be their "flavor". With cagethrowers they could capture a lot of sacrificial meat and attempt to change themselves.
They would be the only race doing so, which would make them unique enough.
Not sure how this change command works now, in the elven thread the OP reported some issues.
- ability to skip steel industry and mass produce cheap metal between steel and iron (I remember rusty steel from 0.34). Some kind of low grade steel perhaps? directly mix iron, potash and charcoal maybe?
- spider pets. including GCS.
- slower learning
- gobs should have some sort of training/sparring arena with a chance to break a bone or loose an eye or teeth or something. I'm not sure if reaction can cause this, but perhaps add some short-lived syndrome with bleeding ears?
- if it would be possible to implement some system of replacing the current ruler with the one gob that is stronger than the Goblin King, it would be awesome. I doubt the actual duel between king and usurper could happen, but voting the weaker out of position would still be nice.
- limited farming (underground?)
- no strange moods. They will get them anyway from visitors.
Apart from that they do not need to change that much. Perhaps add them all values "family" and "romance" at the highest rate to increase their chance to have offspring and to reflect their high breeding rate. There is some other topic complaining about their slow population growth, but I don't see the problem in my current game - they are the most numerous of all, although loosing wars badly.
I think that keeping them in line with vanilla is not a bad idea. They do not need to be greatly altered to be a menace... to be honest Pandashi should be given some consideration next