Is there no quests to download for US version? Will there ever be?

Also I was reading the availabilities guide and under the section Offline Multi 2 to 4 Players, does that mean you have to have 2 human players to get those cards? I've obtained some of those cards already without a human player but then I still need some of the most common of those cards.

And finally is there a list anywhere of all the E cards that are obtainable so far and how to get them?

Thx.