The prince should be strong as they are meant to be the Blue Dragon’s leader(and look at Mastermind and Cult Leader. They’re both strong leaders, though they still have counterplay), but I agree that that does not mean that prince should not have counterplay.
The prince is(or at least should) be meant as the Blue Dragon’s leader. They should help coordinate the BD and gather information. The Cult and Unseen each have a leader class so why shouldn’t the Blue Dragon.