Very interesting development if it comes to pass. It would probably push a number of stays back to Hilton from Starwood. One note of caution though is that over on the Starwood side of the fence, I have rarely received suite upgrades in the last 2 years as some properties policy can be somewhat "idiosyncratic". What I would be particularly interested in is a specific lower rate for Diamonds such that a Suite would never cost more than double the applicable room rate (inclusive of corporate or other discount).