Thats not to say that the stock jag-stang isn't a good guitar. personally i love the neck pickup, it just took about 6 years for me to figure it out. and i use and abuse the trem unit. I have since day one with that guitar.
as far as the bridge goes. its fine, its radiused to the neck. its a good bridge, the only thing you may want to do is stop it from rocking, but really thats only if you use the trem.