I think all headphone innovations should be covered whether they appeal to audiophiles or general consumers. Even if it's just a post every 6-12 months it can bring awareness to the change that is happening. At some point the audiophile world is going to overlap with the consumer market as shown by headphones like the AKG N90Q.
I don't even see the point of just covering 2 channel (meant for loudspeakers) audio. It's a stagnated world that only sees minor improvements and will never offer anything otherwise without DSP.
DSP is required for high fidelity on headphones whether that is basic equalization to your unique HRTF or fully-fledged binaural synthesis for out of head localization. Headphones offer a different experience to loudspeakers but it is still spatial distortion of a signal meant intended for a good loudspeaker setup. No headphone will be neutral out of the box due to unique differences in our head/ear geometry.
So yes cover 3D audio because it's an area of innovation that can radically change headphone listening. This can be either getting as close as possible to a loudspeaker setup or creating convincing synthesized audio of virtual environments. You can create the most convincing 3D visuals in VR but if sounds fake then it will feel fake. Getting Presence in VR requires convincingly real audio.
I just don't see how you can ignore it when major players like Dirac and Sennheiser are in on it. It's like ignoring the rise of bluetooth headphones.