So I'm totally stealing this from the legacy kotlc wait book by the unmapped star but I had to well not really but oh well

So the unmapped star is talking about how legacy is going to have to do with those missing dwarves and since SM was asking us about the dwarven and ogre capitals.

So I   think that the ogres kidnapped the dwarves and it might have to do with exile or maybe that's how the neverseen found out how to get into the sanctuary through that forgotten dwarven shaft.

Or it may be a whole new ordeal.

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Hope you have a good day I'll probably have more the theories soon about this.