Guild Wars 1 never had "Gambling Boxes" in their shop. Only Cosmetic items, expansions, skill/pet unlock packs, and character slots.
On topic: It's nice to see the return of white crystals, however it's cheap tactics. Introduce the white crystal, players want them, take them away, make players go crazy trying to acquire them, later give them a little chance of receiving one if they pay up.
Those are the same tactics Mc Donalds uses for the Mc Rib.
In all honesty I'd rather buy the McRib!