i think its a great idea, but as we've seen with the recent stress tests, if we want to see bitcoin as a viable micro-payment network, we need to increase the block size.
theyve been promising to help the third world and unbanked with bitcoin for as long as ive been here at bitcointalk, it will be nice to see that actually become a reality.
it's not that easy to offer bitcoin as a payment service to the unbanked as it is a potential huge market for banks and other companies. they will most likely try to force their own services to these people with high fees as it will make them a lot profit over the backs of poor people. they don't care.