It needs to regain the glory it had in the late 90's early 2000's.
What was happening then?
We had a FANTASTIC mix of players that were household names. Sanchez-Vicario, Martinez, Graf, Seles were winding down their careers. Davenport, Capriati, Hingis, Venus, Serena were all in the prime. Pierce, Kournikova, Henin and Clijsters were added into the mix. You had a solid, solid top 10 and even top 15 group of players.
Those players were dominate. They were regularly meeting in the 16's through Finals of the big events. Miami, the Slams. Where is counted. Because all the players were household names, women's tennis was big. TV wanted them because if you had 4 - 7 of those players, the chances were very good that we would get good match ups late in the events. And when one lost early it truly was an UPSET.
This sort of went away in 2003, IMO. Players like Seles, Hingis, Pierce were injured or not playing. Sanchez-Vicario, Graf, Martinez all retired. Venus and Serena became injured and missed 6 - 9 months.
You had all these 'new' players creep into the top 10, not by beating all of the greats that people knew of to get there, but by basic elimination of the previous top 10. In some ways, they got there because others left the sport of one reason or another. Still, good for them for getting there, but just being there one day out of the blue; it makes it hard for those players to A - generate publicity and B - generate interest in them. That's a large part of what happened, IMO.
How to get it back? Well, TV is a must. No one watches righ tnow, because there is nothing to watch.
Plus, you MUST some how promote the top 20 in women's tennis better. Players really only know Venus, Serena and maybe Ivanovic and Jankovic. Safina is nipping at #1 and no one really knows her outside the tennis world. That's not a good sign.