I don’t think it’s that ambitious. Cambria is standalone, has colour pass through for mixed reality and has balanced the weight distribution better by using pancake lenses and putting the battery on the back. It will certainly be usable while sitting or standing still anywhere, although people will look at you weird if you do it in a coffee shop. It took Meta 3 years to get there from Quest 1 so I’d say given 5 years and some decent sales they could get it down to something that wouldn’t look too strange and would be comfortable enough to wear all day and would work while walking although I imagine that would pose similar risks as walking while using your phone. Instead of black rectangles we’ll be seeing ski-goggles everywhere.