It would be really nice if there would be just a checkbox to more easily get the release group's cover art.

This is especially important because a CD release of the same release group might not have cover art because of the style guide but other release in the same group has one. For example [Studio Killers by Studio Killers|https://musicbrainz.org/release-group/bf047b28-761e-48c9-917b-73a502e27464].

Right now it's just seriously tedious to switch to the release group's cover art when you have more than one release like that and people checking the checkbox can just agree to having slightly different (e.g. square) cover art.