There's nothing really to "throw away" that would make it slighter and smaller whilst still keeping your desired feature set.
The reality is that you're using the VR/AR features in one specific way - not that you're not using VR/AR
It's possible a slightly weaker CPU or GPU could be used but I don't think so and in any case the effects of that would be on cost not on weight. And I don't think the difference would be significant.
The external display being the EyeSight thing? I agree there. That's an expensive boondoggle that will probably be missing in the next iteration in any case.
I don't think you can get rid of cameras without reducing the gesture tracking fidelity. That's the reason the Vision Pro has so many cameras.
> M2 CPU subsystem
Not clear on what this means without looking up the spec sheet. Do you mean "use a slower CPU" or something else? If the former - it won't help that much with size or weight.
Sounds like you're really looking for something like the Bigscreen Beyond?
The reality is that you're using the VR/AR features in one specific way - not that you're not using VR/AR
It's possible a slightly weaker CPU or GPU could be used but I don't think so and in any case the effects of that would be on cost not on weight. And I don't think the difference would be significant.