The info of many interesting tribes have now been released and we are getting a continuously better picture of the many tribes, regardless of how interesting and well thought out these tribes are I would like to share ideas of additional tribal and regional traits and also hear what others would like to suggest.
Hrothi tribe/regional trait: Chemoautotrophic probiotic bacteria: There is a large biodiversity of bacteria deep within mountains, since Hrothi have spent many generations within them there is a chance that some may have encountered chemoautotrophic probiotic bacteria, such a symbiotic relation may give some form of diet like boost or even enable the host in a dire situation of food shortage to metabolise minerals to a limited extent to avoid dying.
Hrothi tribe trait: increased resistance to mineral and metallic poisons: being a tribe living within mountains they will have ingested and breathed in minerals and metallic residues for generations, it would thus not be unimaginable that they may have developed a higher resistance to these minerals and metals.