Very good question. There will always be a need for miners to verify transactions. We introduced our web miner that can also run on a mobile phones.
Africa has large mobile market. We also introduced our self contained offline paper wallet generator.
This will help people with no access to tech able to hold coins as gift vouchers to exchange for goods if excepted by the merchant. (Still ways to go)

We don`t claim to solve world hunger.    If I can help A send B money across borders cheap without any interference in Africa i will be a happy man.