I manage a few piholes (2 at home, 1 on a personal VPN, and 1 for relatives). In older versions it was easy to manage and sync these pi's via a simple script that just downloaded a few files (adlists.list, regex.list, whitelist.txt) and replaced whatever was there and poof they were on the most curated list.
With the database, its a bit more complex. I cant seem to figure out how to keep everything in sync, and it looks like a lot of the effort is GUI based. Can you create a script that does the build process (similar to when you first upgrade to V5+) that people like me could use? It wouldn't have to be something that was exposed via GUI, but just a tool for us that want to use the backend / command lines to keep things up to date.
I understand you lose the per client rules and all that jazz, but efficiency of use to bulk update would be a life saver.