Hear me out: a nostr relay that asks for a micro payment with Cashu ecash (1-10 sats?) for each note a user wants to send.

I see several benefits over normal Lightning payments:

- better privacy through ecash

- no fees: 1-10 sat payments easily possible

- non-interactive: no invoice creation and back and forth, ecash could be directly attached to a nostr note

- speed: Lightning payments can get stuck, bad for UX

- efficiency: a relay could collect ecash and "cash out" onto their own non-custodial Lightning wallet once a day / every hour

Benefits of Lightning:

- can be completely non-custodial

Thoughts? If anyone is interested in exploring this, I'd be up for a brain storm!