If you're going to mint a token, macaroons are a great spec. But when designing a critical security system, the default should be the simplest possible thing, a

If you're going to mint a token, macaroons are a great spec. But when designing a critical security system, the default should be the simplest possible thing, and DB lookup is still much simpler than macaroons. So, you have to have a big problem that macaroons solve first. In my experience, the cure is worse than the disease here.