Follow me carefully so that to avoid misunderstandings.
I want you to mark the players from the list who, in your opinion, has no big importance to the tour. Had those never existed the tour would be the same.
The list contains mostly the top players + some (not unseeded and looming) former champions.
Answering for myself at first, as always, I wouldn't notice Zvonareva's and Henin's absence.
What do YOU think? But be kind and don't offend the others' feelings and tennis players in general.
I believe JJ, despite her wins and her solid game, has failed to leave a mark on the sport. She almost never performs in majors and with disappointing losses in lower level events, she seems to have done enough to find her place in people's hearts.