Customisation of Event booking components

Extension of Event Booking component: Could you include a follow-up email feature that is sent to the registrants of an event X amount of days after the event has happened? That would be an awesome feature! Currently I am sending my end-customers an email with the request to rate the event by the event creator on their profile page, however I am often forgetting it. Would it be possible to send automatically an email with the tag of [EVENTOWNER]? That would be awesome for getting feedback! + Addition of an option/button/tickbox that sends a reminder email for the payment if the payment has not been done yet (only for bank transfer option). Would be good to have customizable reminder from front-end event creation but could I definitely need to be able to set the Master email template in the back-end. If it is easy to make on front-end, then it would be great to have an override kind of email template as the other email overrides under Advanced tab (if empty, then the standard is used). +When you set someone as canceled in the front-end or back-end, the registrant gets an cancelled email (need to be able to set the standard template in the back-end, the same way that normal Emails & Messages are set in the back-end of Event Booking configuration).