Honestly, I think much of the injuries are more a function of the way players hit the ball today. Plus, the game is so much quicker than it used to be because of the racket technology. Also, there's a lot of grueling off-court training takingj place that may be contributing to an injury. Look at Serena; she hardly plays, yet is constantly injured. She simply can't keep injury free. If a player is smart, they can create a schedule that affords plenty of rest. Clijsters, for example, should have never scheduled herself for three straight hardcourt tournaments, if she knew in advance she also would have to play in Toronto this week. That's nobody's fault but hers. The season is long enough and the opportunities are available for players to take good four-week break during the season, plus two months at the end of the season. You just have to be smart about it. Take Myskina this week. She's battling a shoulder injury, so what does she do. Plays Stockholm, where she certainly got appearance money, then jets halfway around the world to play the very next week. It's hard to sympathize with her. Those are just two examples that come to mind. I've always thought Davenport was daft for playing those three hard court tournaments in a row in California year after year. It's not asking too much of a tennis player to play a minimum of 15-16 tournaments a year. They can accomplish that and get the rest they need, too, if they're smart about it. As for this idea of having no tournaments the week after a Grand Slam, what does that do to benefit the top players. Usually, it's small tournaments the week after a grand slam, and the big players aren't playing them anyway. All that would do is rob the lesser knowns of opportunities.
The idea of separate tours harkens back to the old WCT days in the early 1970s, but I don't think the women could support that kind of tour. I'm also not a fan of reduced draws, because there again you're denying opportunity to the lesser lights, plus making it less likely for a tournament to make money.
I guess I'm not offering much constructive , but I believe the problem is primarily one of poor scheduling, and a different way of playing the game that puts more strain on the body. I'd like to see the season end at the end of October, but I don't think a shorter season will do anything to lessen the injuries.