Wow! Holy frippin' Zot! You mean she left, Muldaur took her place, possibly permanently, and then, when Roddenberry died, whoever was in charge of STNG brought her back? That is a phenomenal event in Star Trek history! If she hadn't have returned, a lot of important stories would have turned out vastly different. Not to mention the 7th season finale! I just thought she had a personal medical problem and had to have surgery and recover from it. That's the rumor I heard. But this is an absolute revelation to me. I wouldn't have guessed it would be just Gene's vanity in a million years!
"One of the many, the proud, the friends of Zardoz".