I guess is it worth it depends on your definition of "worth".
I have no sense of direction, I admit it. I need a nav. And I hate the tacked on look of the portable nav stuck to the windshield and the cord running to the power outlet.
I also love Sirius radio (channel 103 Blue Collar Comedy rocks!).
Funny thing about keyless ignition, you sort of forget that you have to put a key into your other car when you drive it.
So for me, since I put a high value on an integrated nav and Sirius radio, and I do NOT want to mess with an aftermarket radio on this car (my wife is not an audiophile), then yeah, the package is worth it.
I really like where the nav screen is located, and I'm used to a menu and joystick entry system on my current Dodge nav system, so having the nav input controls on the steering wheel is a nice touch. But if you plan on replacing the radio anyway, then you're paying $1,200 for a $500 nav system and keyless ignition and a perimeter sensor for the alarm.