Time To Retire Quantum Capsules
With the release of Rare Kinetic Capsules we should begin discussion on the retirement of Quantum Capsules.
I believe the regular item duping (resonators, weapons, mods) was never a major issue, even when VR items duped, but keys have created a major issue over the years, so we should start addressing the issue now, giving us time to see how the game board reacts before considering any actions with excess keys that exist. Niantic can supposedly determine which keys were hacked, and which were dupe'd, so this can definitely play a part in reducing numbers of keys in circulation, although I would think letting people keep 5-10 keys no matter what would be a good compromise.
Also, instead of Qcaps just reverting to a rare capsule, they could remain as a VR item with a higher capacity (200 items?), or even a new mechanic.