BetterURL to use Invoice Number in URL

BetterURL replaces the ‘sliced_quote’ prefix to ‘quote’ (same for Invoices) however still has a messy format for the URL using the long text name, this request is to enable a simple numeric option for short and clean URLs, ie, changing ‘URL.com/invoice/insert-request-name-here-which-is-too-long’ to ‘URL.com/invoice/006’ or similar. A more advanced feature would be have variables that can be inserted in a URL format option.