I'm interested to see how the "manufactured spent / churning" crowd will use this. There are credit cards with 2% (fidelity amex) or 2.2% (barlays arrival plus) cashback out there.

Having a 1.75% fee on this will probably have some of them experiment :)

I'm sure Amazon will shut that down, but I'd love to see how much spent people can run up before that happens.