Issues aren't used as people generally use SO. Questions like "how do X". Most people use issues to report bugs, request features and most prominently contact the authors when things either don't work as expected or the software lacks documentation about how certain things are supposed to work. I as a user and maintainer of OSS packages prefer such questions in issues than on some random site like SO which I won't be monitoring. Issues is a great place to consolidate all the knowledge around a package. Also, most of such questions can be considered as bugs, feature requests or just plain lack of documentation.

Please have an alternative then!