We handle the Fiat account side. Exchanges handle the engine matching crypto to fiat side.
So "only" the fiat side is centralized. What a truly innovative system you've worked out. With fees to match, I'm sure.
I'll just call it right now - its a plain old money-grab, and it will end in tears.
They've managed to sort out banking relations, which are one of the hardest things about setting up an exchange.