so it make it easy to replace D.SE with module issue or even add related question inside issue link in Drupal module page.
I think its useful, is not?
As for replacing Drupal Answers with a module issue queue, the purpose of Drupal Answers is not replacing the issue queue on Drupal.org, but provide a repository of Drupal questions to which future readers can be interested. That is why questions about bugs are not accepted: They would be not interesting for future readers, once the bug is fixed.
As for linking questions related to a module, you can simply use the link to the tag feed, such as https://drupal.stackexchange.com/feeds/tag?tagnames=rules&sort=newest. The feed URL is generally in the format