What if a formerly beta site itself (on the site meta) comes up with a temporary design and provides all the needed images in the required formats and resolutions? Would Stack Exchange consider such a community-provided, community-approved design for use or reuse in the foreseeable future? Asking for Politics SE and Parenting SE, although the comments below might list a few additional sites that could be interested.
Many. For example:
We know the sites that lost their “Beta” label in 2019 are still waiting for a redesign, too. We hope that some sort of design love (or perhaps theme customization) will come in the future, but we don't have concrete details of what this will look like or a timeline of when this will happen.
It’s become clear to me that the Stack Exchange Network has higher priority work for their design team than making beautiful site designs for our many “graduated” sites… and that’s OK. It doesn’t mean that they will never design another site (hopefully) but it does mean that we should probably work towards letting them off the hook further by allowing them do the designs in their own time rather than tying some part of the “graduation” process to their work.
However, some good news that we can share is we're starting to discuss ways we can work on site design in the future.