I'm considering changing my pledge from the hardcover to the hardcover + Roll20, but had some questions. I have physical and PDF versions of the core book and Tome of Mysteries, but I've never purchased them on Roll20. Would I be able to use the CoW on Roll20 without some sort of core book purchase, or are the main rules and playbooks included when you say "a full compendium"? Is there a pledge level or add-on where you can get the previous materials for Roll20, or do you just have to purchase it on that platform?