Last year we had a Factions system in our Kickstarter stretch goals that was supposed to introduce something like this, but the Kickstarter failed and we no longer can take the game in that direction, that would require a complete redesign of everything in it. It doesn't make sense for this character to run errands for mortals or gods, there's no point in trading since everything belongs to you. A lot of the questions you asked here should be answered as you level up and read the character monologues and dialogues with the NPCs.
Factions, trading, and discussions are something that I plan to have at the core of a sequel however, it will lean more into RPG stuff like this.