Hyatt Gold Passport has my absolute favorite hotel benefit: Diamond members get to confirm a suite at booking 4 times per year (up to 7 nights at a time). Instead of hoping for an upgrade close to arrival or at the check-in counter, you throw down one of your trump cards and your base-level room reservation confirms into a suite, provided that the hotel has base-level suites for sale.
There was a rumor about Hyatt changing the expiration rules on the upgrades given to Diamonds. The denial they issued elsewhere wasn’t especially convincing. So I got a more definitive statement.