What I do, is I set up the standard deck in one campaign and then either duplicate that campaign or use the Transmogrifier to bring the deck over. Then it's pretty easy to customize for the game. Although, I do keep fantasizing about creating an Adventure Deck for the Marketplace...perhaps someday I will, but I want to have enough good content. I've also thought about reaching out to PEG and seeing if they'd be interested in selling the Adventure Deck on Roll20, now that it supports Decks as Marketplace content.