Thanks for the great writeup!
After doing a bit of research, an even more feature-laden option would be to get a universal unit from Gentex which would include the Homelink, autodimming lights, map-lights, mood-lights, temperature and compass.
It can be had in different colors as well : Amber, Deep Blue, Green, Purple, Pontiac Red, or Red.
From the Gentex site, I found a link
http://www.mitocorp.com/flash/homelinkautodimmingmirrors.htm
Obviously it's a bit pricier than the option above, but it would be sweet
