You should add the other Hannibal Lecter actors (from the movies). Also, Emily Blunt also portrayed Mary Poppins. And Zachary Quinto played Spock too in the 2009 reboot.
I can see the rationale for doing it this way. Both Obi-wan actors are well-known for that role, and it could be argued there is some ambiguity about who is more famous for their portrayal at this point. Conversely, of the three actors who have portrayed Spock, I think most quizzers would agree that Nimoy's is the most famous portrayal, so that choice is more clear cut.
Manhunter - Brian Cox
Silence the lambs - Anthony Hopkins
Hannibal - Anthony Hopkins
Red Dragon - Anthony Hopkins
Hannibal Rising - Gaspard Ulliel
Hannibal Rising - Aaran Thomas (Hannibal as a child)
Tv series Hannibal - Mads Mikkelsen
Proceeds to add two different boxes for Obi-Wan Kenobi