The ability for users to delete individual worlds is required as some players may have some bad world data, or corrupted worlds or simply want to start fresh. Adding the ability to list worlds and delete them would be beneficial.
Current plan is to have a “Tools” button in the My Foundry page, probably somewhere below the Import Wizard button, and the Tools button would be a dropdown offering extra options for users, one of which would be “Delete Worlds”. Once selected, a dialog would open with the list of worlds available, and the option to delete them (one at a time). Upon selection, user would be required to confirm their choice by typing the name of the world, and given the option to export the data first.