ISals:
Besides Michael Farr, who are recognized Hergéologists / Tintinologists, from the Hergé Foundation or Tintinimaginatio who could continue to provide "Behind the making of albums" or other Tintin books for the future?
Oh there are definitely others out there - Dominique Maricq, for example, who has written several fascinating books; Benoît Peeters, who made a huge impression on me with his
Le monde d'Hergé, as well as providing the fantastically well balanced biography,
Hergé, Son of Tintin; and Stuart Tett's capsule information from behind the stories in the young reader editions of the books was highly readable and well informed - and those three are just off the top of my head. There will undoubtedly be more I have missed.
It should be mentioned that M. Peeters has already mentioned that the archive of M. Goddin's personal research papers has already been preserved, in anticipation of it being made available to others to carry on his work, which will undoubtedly lead to further interesting research by a new generation of scholars.