This was already once a part of the game in the form of 'Elixirs' and was removed in the beta along with the Mystic Artisan, Talisman, Cauldron of Jordan and Nephalem Cube.
Here are some pictures of Elixirs in early beta;
Here are some buff scrolls that were removed as well;
As with those one or two of those other features, I'm almost positive we will see this content return in the expansion.
I never played in the Beta. That looks like some really cool game content. But why remove it? Did they just want to shelve it for the expansion or some other reason?