^^^^ I'm still speaking hypothetically, but, Esther, maybe the show would have seemed less "slapped together" if the leading lady had seemed more suited for the part. (Again, we're talking about intangible qualities here. Nobody, as far as I can tell, questions Michele Lee's talent, skill or work ethic.)
A clash of cultures has long provided the theme for musical theater. ANNIE GET YOUR GUN, OKLAHOMA!, CAROUSEL, SOUTH PACIFIC, DO I HEAR A WALTZ?, all those operettas about princes who marry waitresses, etc.
One woman's low self-esteem seems pretty thin stuff on which to build a large-cast musical production.
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No, justme, I never saw Lee's sitcom. But I know the film of HOW TO SUCCEED works, in part, because Lee is grounded and sensible in contrast to Robert Morse's flightiness.