As far as console sales....
They have in the past done discount bundles (buy 1 max) during a MS or Sony sale event. They skipped last years MS summer arcade sale, which was too bad because they do get free advertisement by discounting the bundles for the sale.
We are also getting some store updates next patch.
Souls and gold are much cheaper to buy with gems, and the daily gold / souls pack is cheaper.
Growth packs and path to glory are really good bundles.