It could be nice to have issues template and PR template.
An example of the PR template: https://github.com/apache/spark/blob/master/.github/PULL_REQUEST_TEMPLATE
An example of issues template: https://github.com/delta-io/delta/tree/master/.github/ISSUE_TEMPLATE