I just picked up PEG new Pirates of the Spanish Main RPG. A lot of cool stuff, some of which would be neat for 50 fathoms due to the obvious connection. Don't know if we want to go so crazy as to use their tabletop ship rules with ship mini's just yet, but who knows. Anyway here's a sample of some cool stuff.
Requirements: Veteran, Command
Extras making a group rolls while under this leaders command roll a d8 wild die instead of d6.
Requirements: Veteran, Wild Card
Heroes can pull of stunts lesser men can only dream of. Once per session, when you spend a benny, you may add the reroll TOTAL to your previous roll.
Just a little taste.