Or even better make the inside-out tracking work. They got the cameras on the HMD so kind of lazy not to do it.
Not at all. Those are pass through cameras for other purposes.
Think about this. What if the pass through cameras could track your hands on the steering wheel and the wheel rotation so it always matched what you were doing perfectly. What if you could map wheels to it so you could see where the knobs and setting are on them in VR.
The Valve Index was specifically designed for moding! It has an place under the removable front plate with a USB connection to add whatever you can dream up and they are publishing cad drawings so you can 3D print a device that fits the enclosure.
Inside out tracking is not nearly as good as base station tracking. The base station tracking is the absolute best out there, accurate to 0.1mm and 7ms latency for positioning information. The Rift camera accuracy is 1.5-1.9mm accuracy and Rift S inside out tracking is a step down from there.
For the SFX-100 crowd, there is a separate tracker than can be attached to your rig to track it separately from your headset and there is software available specifically for tracking the difference between your headset and your rig.
Maybe some day inside out tracking will catch up, but for the next few years the enthusiast market will be using base stations. That includes the Vive, Vive Pro, Index, Pimax 5K+, 5K XR, 8K, and StarVR if they ever release a product.
Keep in mind that base stations do NOT require USB ports. They are passive devices that paint the room. Once you set them up and put them on a shelf or mount them to the walls, you are done. Not only that but you have up to a 1000 sq foot area that you can play in if you ever dabble in room scale.
ALSO they can be shared. So if you have a larger room with two rigs set up they can run off the same base stations.