I always thought I had a cool idea for Pirates 2. Instead of going into the Davy Jones angle, make Bootstrap Bill the villain. After spending years trapped at the bottom of the sea due to the curse, he finally managed to break free after the chains rusted. His years of imprisonment and solitude led to insanity. Having been twisted due to the insanity he has grown to hate all pirates and blame Jack for his plight. To get revenge he became a pirate hunter under the employ of the Spanish Crown. When it became known that he was the supposedly unkillable captain (due to the curse) he quickly advanced in the Spanish Armada to the rank of Admiral. Using the dominant and feared Spanish Armada to hunt down the Black Pearl and Jack Sparrow, Jack turns to the one bit of leverage he has for "help." Bill's son Willaim. That of course would draw Will and Elizabeth back into Jack's twisted games of manipulation and deceit to save his own neck from Will's deranged but powerful father. I feel that would've made a much stronger, more personal, and stand alone tale which would've worked far better.
As for the straight man character in On Stranger Tides, I definitely don't want a Will Turner knock off. Maybe a young pirate on Jack or Barbossa's crew who gets drawn into their adventure due to some past connection to Blackbeard or the fountain?
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(Though I agree, Oldman for Blackbeard).
