Hmmm yes, I think you are right, there isn't anything missing, my comparison with the dev board was inaccurate.
To be honest, I don't want to take it anywhere to get fixed, it's probably not worth it. It would cost ~$150 based on other equipment I got fixed and ... well... I've got a spare GCW-Zero.
I just wanted to mend this one as it's kind of my "buddy" system, the unit I use the most for devving. The USB port is handy as it's so much quicker than wifi.
So, armed with a case of false confidence, I'd still like to try and fix it myself. Are the pads directly above ("TWS", "TD0", "TDI", "TRS" and "TCK") anything to do with the USB port? Test points?