if you can pay for relaying and it's only used for broadcasting notes without leaking origin information then it's awesome

only way to do that is with micro accounts bootstrapped through multiple hops, then you "spend" your credit with your traffic, and the payment and traffic are isolated and the origin and destination of notes is obfuscated

ecash isn't suitable for this because the mint sees the buyer and seller of tokens location, has to be done using microaccounts