[BillinghamJ]

Seems a little weird and highly inefficient to separate them like that, especially use of IPs etc.

Why not just have one large instance?

[diffset]

Wouldn't different people want different things on their whitelist/blacklist? AFAIK Pi-hole doesn't offer a way to do that.

[adfreelife]

That's exactly right. Everyone gets their own white/blacklist, control over logging, etc. And how would you end a subscription if the IP still existed with the software?