Now that she is not even ranked in the top 5 (barely top ten), I don't see why she is still mentioned with the upper echelon of players.
She was a great white hope. How many times did you hear "the establishment" casting their hopes on her, to subdue the Williams sisters????? Too many times to count. She couldn't do it, neither have any of the other "hopefuls" been able to dominate them. Those who will inherit the Williams sisters thrones, will BE "sisters".
Martina Navaratilova herself knows this, and has stated so more than once.