I would love for there to be a way to store contact information (email addresses, phone numbers, fax numbers, addresses, etc) in a way that allows you to access them from any task - sort of like an address book? Currently we store this information in individual task & subtask custom fields, so we can just copy & paste the info, but when emailing out of a task it is not always convenient to navigate to a completely separate space/folder/list to capture the info.