Most of the pain of running databases in k8s is all of the "day 2" operations like backups, clustering, scaling, upgrading, tuning, etc., so I'm glad to see all that accumulated knowledge built into controllers like this.
One feature I feel is lacking is better handling of database credentials. I see there's a "copy to clipboard" button next to the password, which tells me we're still using the same single, static, plain-text DB passwords that we've been using since the 90s. I'd love to see some kind of cross-platform RBAC system that uses rotating credentials or asymmetric crypto or something.