Seeking feedback on a PR for a new feature

I’ve put together a pull request [1] that implements a proposal [2] for setting defaults for module parameters in a playbook. I’m seeking feedback from the community on any use cases that may not be covered by my PR before it gets merged.

Thanks.

[1] https://github.com/ansible/ansible/pull/22648
[2] https://github.com/ansible/proposals/issues/81