Billie Jean King says she would happily see the women's cup competition bearing her name combined with the men's Davis Cup into one World Cup of tennis.
Both team events conclude next month, with the Billie Jean King Cup finals in Seville from 7 to 12 November and the Davis Cup from 21 to 26 November.
"I think it's really important to have a World Cup for tennis," King said.
"The whole world understands a World Cup. They know it's country versus country."
The winner of 39 Grand Slam titles added: "I want us together, I always want the men and women together.