It's really very fortunate that the principal cast have remained with Harry Potter from tip to tail, because otherwise the series has transformed so much, aesthetically and tonally, as to appear schizophrenic.
Chocolate being sold in Harry's name is not fair trade. The fair trade label is the most realistic way that we can know that the cocoa farmers were treated fairly, transparently, and with the chance of upward mobility.
J. K. Rowling excited her fans recently by hinting that she wasn't ruling out the possibility of writing more about Harry Potter. While Daniel Radcliffe may be done, what about his character and his story?