Wonder if those flashes at the end were mug shots for new bounty posters, though I wonder if Usopp will get a bounty or Sogeking. And yea it seems like Shanks is the only person that knows how strong Blackbeard is since he hid his true strength on Whitebeards crew by not making himself standout and taking a Commander spot.

Also besides Ace, Whitebeards crew doesn't look that cool .