Therin of Andor wrote:
Khan was not a recast. Why? Because RM was such a force in the original role, that no one else would be able to replicate his aura and unique delivery. Bennet, et al were correct, as opposed to pulling a Dick Sargent--which no one appreciated.
Actually, if I recall correctly, "Space Seed" was selected after Bennett screened all 78 one-hour episodes of TOS looking for the best one with sequel potential - and quickly latched onto that one.
The screening/selection is correct, however in regard to casting, why bother with RM at all, if recasting was not a problem? Just get anyone to take the role. The thought of even trying
to get RM speaks to a concern about authenticity.