Looks great -- always wished the admin panel came with more configurable bells and whistles. I've been exploring Quarkus recently (https://quarkus.io/), and it has a Dev UI with a similar extensible "panels" pattern. It's a bit different than Django since it's not for running in prod, but nonetheless it's pretty helpful.

sort of a tangent, but quarkus also has a concept of "dev services" that are monitorable via the dev UI. It uses Testcontainers to start and autowire runtime deps (postgres, redis, keycloak, etc.). Pretty pleasant experience to get the whole stack spun up and observable alongside the dev server.