I feel like if you need that many keys you’re just doing too much.
I like the use case of ultimate portability.
If I need to make 8 different key pairs what the fucks the point of having custody of all your data and a single identity. nostr:note182zd92zkzu366g6kmaqudzketfty5lxg4qa90tqa4e4pvw2ygcqsku5pls