Comfort: This needs to sit on your face for 8 hours or more. Unlike with the Quest Pro, your face always touches the shield. If you wear AirPods Max with this, the majority of your head is covered, sweating and unable to breathe. Apple supposedly paid lots of attention to making the material breathable, but their rubber products also deteriorate notoriously fast, so we'll have to wait and see.
Resolution: The displays have an impressive resolution, but I'm not sure it will be enough. So far, none of the VR headsets I've tried have come even close to matching the resolution that I would want for coding and desk work. But image quality at the same resolution can vary heavily based on the lens quality and the headset, so we'll have to wait and see.
Input: I hated Hand Tracking on the HoloLenses and disliked it on the Quest. The pinching gesture becomes uncomfortable really quickly, as it requires more and more monotonous movement than tapping a key or clicking a mouse. However, they seem to heavily involve eye-tracking as an input method, which none of the other headsets have tried, so we'll have to wait and see.
Price: Well, I have a year to justify this in my head.