I saw Gary mentioned this in his blog, it seems like some changes here.
The biggest advantage of SPG program now is no capacity control on its standard room redemption, but Hilton has matched this benefit earlier this year. Marriott will match this benefit soon. Hyatt is already easy to find an award room. while other competitors are catching up, SPG soon will make its move ahead of others again.
In addition, SPG already has the best elite recognition in the industry, Suite upgrades, 4:00pm checkout, the new benefits should improve the elite program even better.
let's wait and see