This is exhilarating, lol. Here are my current thoughts about this game:
1. There are trinkets, right? As far as I know, they are sought after by many—Nameless, Witch, Ruben, heck, even our master could be trying to get his hands on them, and possibly other people too. But... Why? I believe that those trinkets (which I think are orbs) could grant power or extend one's life, or maybe even both. For now, we don't know what Nameless and Mirage are trying to accomplish. But for Ruben, we know he's trying to extend his life. Think about it, Father's heart could be one of those orbs. He said that he wasn't born an emerine golem. If I remember correctly, he was on the verge of death, but then something saved him. It extended his life. What if collecting all of the trinkets could grant immortality? I think Mirage will try to kill Father for that. By the way, did you guys give Nameless both of the trinkets, or just one?
2. Our master could be lying to us. He said in his letter that he left to take care of an urgent matter. If he did do that, there's a chance that he's currently in the Stormclaw tribe, probably trying to help the orcs get out ( I thought he could be there cuz it's the last place we still haven't unlocked yet ) , or in other parts of Aigran. If not that... What if he's part of the Northcrest's Bentley family? Remember, we don't know his origin, not even his real name. Could he be Lord Salvador? The Bentley family are alchemists who excel at creating medicine. They're probably the ones who made Wraithfever in Mythshore, though I don't see any reason why they would do that. It could be an accident too. Anyways, we don't know for sure if our master is a good guy or a bad guy, though I think he cares for us, I just hope we don't get to kill him.
3. The Bentley Family vanished. Could they be running from their responsibilities in Mythshore? Were they taken? If they were taken, it would either be Nameless or Witch who did that, as they're the only ones who can do it without leaving any trace. Or they probably left on their own will too. Nameless and Witch ask people to take their sides. They even did that to us. The question is always why? Why would they need alchemists? All I know is that in the world of Aigran, potions are more powerful than swords...
I'm sure I'm wrong in a lot of aspects in these theories as there are a lot of missing key details. But yeah, that's what I'm thinking.