Re: The cord attached to the headset is a problem!
Too bad we don't know how to make devices with high resolution displays and hours of battery life. If only we had something like that in our pockets today, it could be used as a model for how Oculus could achieve this.
As for the 2.8 Gbps, 60 GHz wireless can accommodate that at short ranges, but better yet they could compress it so they don't actually need that much bandwidth. Decent real time HEVC compression is a bit too intensive for current PCs, but MPEG4 is more than good enough to cut that data rate requirement by well over 90% without noticeable visual artifacts.