This is what i think Vince is doing with the pg rating.
He is simply rebuilding the WWE by attracting new kids. With the program as PG, parents will let their kids watch it if that child has a parent who monitors what their children are watching, and then the other kids who can watch whatever will tune in because wrestling is a popular thing when you are young. So with all these young kids starting to watch wwe, they will soon be hooked within weeks just like all of us were. Now with the older audience, it is a bonus to him whoever is not a young kid and is still watching, but he could care less. With this new audience, he can re-create a reputation for wwe in the mainstream media. Hence all the guest hosts (even though he was told to do so by USA network) So then as he keeps getting little kids to grow up with wwe, he will then change the programming again in maybe about 8-10 years to re-create an attitude era (im sure Vince knows the attitude era was the greatest years for wwe because triple h, shawn michaels, and dusty rhodes were saying that on raw last monday).
In my opinion, he is re-starting the wwe cycle. It started with Hulk Hogan, and right now we have our next Hulk Hogan (John Cena). Look for another Rock and Stone Cold in years to come and prepare for the future. So basically this is the 2nd beginning of Vince's wrestling dynasty, because the cycle has started.