Ok, in retrospect I have had more time with the nav and I was a bit too harsh on it and not objective enough for my own tastes.
I am used to Garmin's premium nav units.
The CUE nav has some really nice features over and above the Garmin...and a few things that could be learned. The following is based on comparing the two.
POSITIVES:
1). It *does* have a functional lane assist.
2). I really like the nav on the main display, instrument cluster (in two places, mind you) and HUD simultaneously.
3). The weather horizon is kind of interesting...although kind of a waste of space....I mean.....I can look out the window.
4). Automatic rerouting to skirt changes/problems in traffic conditions is AWESOME.
5). Traffic density overlays (underplays, actually) are nicely done.
6). Showing the beginning and end of construction aid nice. Some sort of "yellow diagonal caution overlay/underlay" might be nice too.
MISSING FEATURES/PROBLEM AREAS:
1). Use the attached Bluetooth data device for true real time traffic and weather to produce map overlays with radar imagery and traffic camera snapshots.
2). Skins.
3). 3-D relief shown on map.
4). I don't know how Garmin does this but their lane assist has a "rendering" of how the exit / maneuver *really* looks! including towers! trees, etc. it's breathtaking.
5). Something is odd in the database. I tried entering my own address about ten different ways including with voice and by typing it in in various forms before it picked it up with only street and zip. I had a totally-qualified address in at one time and it failed to recognize it. Odd.
6). Map responsiveness/animation is good, but I/O is a little sluggish.
7). At one point while navigating, the entire screen sans roads turned pink...eventually went back to normal...but was weird. I'd have to call that a software glitch.
8). I set my map to 3-D...navigate....at some point it goes back to 2-D and never returns. Default views, zoom levels, detail levels, and poi "elevations" would be nice.
9). It does not seem to use the address book from my Bluetooth Droid Samsung Note II phone (uses everything else) when looking for addresses in contacts.
THINGS I HAVEN'T DISCOVERED OR FIGURED OUT IF IT HAS THESE YET:
1). Altitude.
2). Lat/Lon destination programming.
3). Use my data subscription to periodically (like when they update online) update custom POIs from my Geocache queries and show them on the screen? Yeah, this one is blue sky I know.
There is probably more here but enough for now.