I was looking at transfer options from American Express, and I noticed that they're running a new 25% transfer bonus for transfers to SPG. While the MR->SPG ratio has never been great, this makes it a little less bad at least. Normally it takes 1,000 MR points to get 333 SPG points. Until year-end, it looks like that transfer will only cost 750 MR points. I'll probably transfer some to bulk up my SPG balance for a trip next year.