The one option I wish I had not purchased (it's free now) was DAB. It sounds rubbish. Compressed with no dynamic range. FM is vastly superior.
Heated steering wheel is something I wish I had optioned. Instead, I just wear my very warm, soft and expensive fur lined leather gloves which I have had for the last 35 years.
The heated wheel is a great idea but then there have been some problems with it as mentioned in the General Section:
http://www.f30post.com/forums/showthread.php?t=780546