[Mod Request?] Interfaction Trading

[Gerinvelith]

I don't really know if this qualifies as a mod request, and I don't know what else to describe it as, but hear me out...

I was watching a playthrough video & they had two different traders show up to their base at once; and I thought "wouldn't it be cool if in addition to interacting and trading with you, if the traders (granted the factions are friendly) interacted and traded with EACH OTHER as well"