Pirates of the Caribbean: On Stranger Tides

According to imdb, the fourth Pirates of the Caribbean installment will release next year in May. I'm so looking forward to it. It will lose the whole Bloom/Knightley romance (which is good, they wrapped that up at the end of At World's End). However, it will introduce some new blood. Hopefully in Blackbeard (as he has been mentioned)! Which pirate would make a better addition? Even more important, who would play him? The anticipation kills me.

Image via Blue Heron Elementary School