Dear jrs044: As you will know, Welles once strongly considered Lucille Ball for the part of Susan Kane (but RKO supposedly doubted her talent!), and he was a strong, early supporter of Ms. Ball's career, casting her in several his his radio shows, shortly after coming to Hollywood. She reciprocated with help when she had become an executive and a mega-star, but some would say that her help was no more than he managed to give her.
I always like the episode of "Lucy" you call to our attention. Lucille Ball's interest in movies and theater makes one wish she had gotten the part in CITIZEN KANE. She would have done fine, I'm sure.