Paid bounties for Metabase development?

I would like to offer a bounty for developing a public-access/read-only mode for Metabase.

Is there any prior bounties or grants like this among the Metabase community? I could not find any prior art in the forum or on the project's GitHub

I'm using Metabase to offer public Helium blockchain analytics but we are forced to require logins and sometimes shared credentials, which is not ideal. We'd like to let anyone browse through the many useful dashboards & queries, and only require login to save or edit.