Hmm, if mind is about choice, then what would a page of mind be able to do, since it’s a self-serving aspect? Get people to agree with them? And outside of mind control/manipulation, what do you think a more “aggressive” class like knight or lord be able to do with it?
Not much on the Lord of Mind there, but the Hivemind aspect of it really sounds like something they’d do- Or alternatively, rather than Commanding Minds, they could Command Choices, becoming a sort of… Dungeon Master for the entirety of the adventure, controlling what’s going to happen and manipulating what others do.