Well actually I think there is something way more simple to consider here.

If you 'could' supply VISA cards payable with BTC you would make a fortune doing so on even a small margin.
That is quite simply obvious.
It would give the general BTC community a way to be able to pay for anything with BTC.

So I put this forward for this very reason.

Seriously, you need to provide a few pages of very high level details about your company and the people involved.
Your connection with VISA, your company history, your proof that the company won't be disappearing and details about where ALL the funds go and how the VISA cards are funded.

Not hidden web domains and anonymous google email servers.

If you cannot post those details here in the next 24 hours then it would be quite expected for anyone here to assume it is a scam and no one should be risking their BTC on it.

BTC <-> VISA is not a new idea, it's just something that not even the well known BTC companies have been able to do yet, so you need to provide a LOT of details and why YOU are able to do this when others cannot.