I wonder how much revenue could be generated this way:

Offer users, premium or otherwise, an option to permanently take an 8-or-more-characters Primal NIP-05 name, in exchange for opting in to an "inactive wallet share" where they keep their Primal wallet above a small minimum balance, and a small percentage of their wallet funds can be taken if both their npub and the wallet itself appear inactive for a period of 5-10 years.

Allow the 8-character minimum to be shortened with an increasingly large one-time fee the shorter the name is; discount this fee for premium subscribers.

Always warn opted-in users before they go below the minimum balance Never take the name away as long as the user has never ignored that warning - no increasing the minimum because they went below it, no taking the name away because the shared portion put them below it.