Send your money there and you can use that in whatever means paybase will use to pay the merchant or pay bills with. What if you could pay your taxes with BTC or for that matter with any crypto without incurring large bank transfer costs. What if I wanted to pay something in JPY evenr tried that in a bank?
What part of "it's already been done" don't you understand?
If you were really interested in those gawsome features, you would have done a single google search and learned how many services already exist that do exactly what you want.
This would be the ultimate exchange any currency in and you really don't need to worry about how the payment is being made to the party you are paying.
You only need to worry about the unregulated/unaudited bank of GAW disappearing with all your money. No big deal.