Interesting post. As always, really.
I'm not sure if I really agree with your allocation of ECW as the rookie/veteran show. While it does seem a simplified way of using the show, I think there are so many more better uses for it. A rising star, for example, could use the exposure that comes with being an ECW Superstar, and used on RAW and SmackDown! as well as Sci-Fi, to really get a footing in the company.
I have to say that something looks a bit weird about SmackDown!, too. Perhaps it is that the gap between mid-carder and peaked main eventer is a little too much?
Besides that, you do seem to have things organised very neatly, which is a definite plus. If the WWE were run like that, I could see it working. Even if ECW got very low ratings.