Wouldn't an address change, 30 day wait, and then transfer work?
It might, it might not. Either way big hassle for buyer=price premium.
But Diners are 1:1, right?
Any idea what a Diners point is worth compared to MR and SPG?
They are 1:1. There was a 25% bonus last fall for AA transfers.
Very few people have a diners card, so there's not much of a market for them.
I do love their retention bonuses though!