I am not arguing, this is a great improvement to Coupons functionality, that is why I am asking to report to ideas tracker.
Please try to go to the direct link here:
http://ideas.x-cart.com/forums/229428-x-cart-5-x
Let me know if it still does not allow you to post an idea.
As for module creation, if your store crashes again, please create a new thread with the error messages from php_errors.log file of the <X-Cart>/var/log/ folder.
Tony.