Just to draw back to this idea of rebellion, personally I’m not a fan of it within my own settlement and my own settlers but, drawing on some discussions in this thread:
I can definitely see it working in regards to capturing other settlements or capturing enemy forces.
A scenario where that goblin labour force you have rise up and wreak havoc from within would definitely be an interesting experience.
I have no idea whether the use of other factions in forced labour is part of the core game … Might be one for mods.