The relevant template(s) at https://gitlab.com/gitlab-org/gitlab/-/issues/new appear(s) to state(s) that feature requests should be posted here in conjunction to https://gitlab.com/gitlab-org/gitlab/-/issues/new.
Release notes
Added the ability to set separate Libravatar and Gravatar avatars per user.
Problem to solve
Some people prefer Gravatar, others Libravatar. Currently, they are bound to the decision of their administrator regarding which they are permitted to use for their account. Since both types of avatar acquisition exist, one should be able to serve as a fallback, and the user should be able to choose which is their primary preference (thus removing the ability to exclude one offering, at least by default).
Proposal
Each user should be able to set a separate Libravatar and Gravatar avatar.
Intended users
Developers, presumably. Not many other people use Libravatar.
Feature Usage Metrics
I can’t assist with this.
Does this feature require an audit event?
Not to my knowledge.