OL decks? Why the heck not I'd buy them! Sell them in packs.
Campaigns? Make many!
Hero stuff? I have no idea...maybe add a merchant NPC in some quests so heroes may spend some hard earned exp. and cash while adventuring. Give them a feeling I'm leveling up while questing feel. Or a hero raid mob that can be defeated for wealth or extra power.
Edited by Silverhelm, 06 October 2013 - 08:04 PM.