Different coloured dice, lol.
Yes, I agree with the text Andrew gave. Some notes: Inquisitor (as Dan also said) may be taken in addition to or instead of the regular fleet admiral. Plus I would say: Inquisitor may be placed on any ship he prefers (they are cunning individuals, seeing at times it is better to be on a small vessel then the juicy ponderous big ship).
As for ship restrictions, I'll think about it.