I too missed out on getting USB, bluetooth. To be honest I don't use the phone that much.
I do fancy having all my music on a memory stick.
Kugababe has informed me of a "parrot" system that is available retrofit, though I haven't explored further as yet.
On another note, my lad is fitting a woofer to his DAB radio and we are going to take the Sony out to do that, also have a look to see if there is a USB socket of some sort on the back - after all, a trailing USB wire into the glove box is almost as good as having one in the central armrest. Taking the radio out will take place in a couple of weeks.