Imo this would be a great pkg-dev improvement.
Throwing in the following links to show a possible approach:
There is ofc no need to use all the labels in the same way as proposed in the blog post - but the linked
git-labelmaker would make it very easy to transfer all labels across all repos.
However, this would ofc also involve work for each pkg maintainer to update his old issues (maybe at least the open ones). New repos could have a fresh start.