Improve repairability of the next Quest (Quest 2, Quest S?).
Currently the Quest headset and controllers are nearly impossible to repair without destroying the cosmetics. This contributes greatly to electronic waist and costs buyers far more than it should, to get their quest up and running again after a hardware failure.
If the outer shell were built in a way that was able to be disassembled, some people would be able to repair most issues themselves, while others could send their headset to an independent repair shop rather than just tossing it in the trash and buying a new Quest once it died outside of warranty.
Obviously this can't be remedied on the current version of the Quest, but the next one should be engineered to be repairable.