While reading through this thread, the thought raced through my tiny brainpan that I should be sarcastic and post a picture of my Sync-1 screen.
grunt, grunt, grunt
Becoming serious, I really don't miss any of the later features of the later versions. (Especially Sync-2.)
For me, I really only use Sync for •phone calls, •maps and driving instructions, •gas prices or •restaurants along the route, •weather maps (infrequent), •traffic conditions (infrequent) and •listening to CNN, MS-NBC or FOX NEWS. Some 60's and 50's music, Beatles channel (these all get old fairly quickly), Road Dog Trucking, Willie's Roadhouse, and especially the comedy channels.
I don't use verbal instructions (probably the only ones I remember are "phone" & "call home" or similar.) For me it's actually easier to press a few buttons to set the location or adjust the audio level or change stations. Can do it without looking. (I'm not a fan of having buttons on a video screen.)
OK, I feel unburdened. Exit, stage left.