The Micropayment stuff is quite nice, overall NYZO is an extremely underrated Project.
Is the micropay feature trying to achieve something similar to what BAT is doing?
That's the fun part, pretty much anything is possible right now.
You could, if you wanted, build BAT upon Nyzo.
That's the power of the 32 bits of sender data and it doesn't require complex and faulty "smart" contracts as is the case with Ethereum.
The developer can choose the language which suits him right and can use the micropay faciliation to receive payments and deliver products.
A browser extension like Metamask to pay these micropay invoices or a mobile app would be the next idea, right now you still have to run the verifier codebase to run the Micropay client.
Once something like that is in place nothing is stopping people from building mobile apps which incorporate the micropay server, or a browser extension with micropayments for functionalities, or games, or netflix, ...
Really, the possibilities are endless here.