These days there's a convention on GitHub of "good first issue" as a label. It would be a Simple Matter of Programming(tm) to:

• scan every distro on MetaCPAN
• extract its issue-tracker
• filter only the GitHub ones
• listing the "good first issue"-labelled issues for each.

If one did steps 1-3, one could then feed that list of tracker URLs into a GraphQL query to the GitHub API to do step 4. That would then provide a list of things first-timers could help with. That would also be very useful for the annual PR challenge.