We would like to be able to edit existing email export definitions (both marketing email export definitions and the ones listed under administration), so we don’t have to create a new one when we find that something we need is missing from the existing one. When you create a new email export definition, you can't go to your email templates and update them to connect to the new template. You have to recreate each template and connect them to the new export. When you do this, you lose the ability to copy and reuse old messages with the old export as well.