SWTOR breaks the paradigm and sets a new one.
I agree with the basic idea you have here, that the game is a fun ride from 1st to 50th. But SWTOR is not the first game to do this.
In fact CoH is the same way, and that was released before WoW was, by 6 months. CO also is much more about the ride then the destination.
So yes, SWTOR does it right IMO because there's a point in playing from 1st to 50, and it's not just there to make you waste time until end game. But it's also not something new that's never been done before.