Years ago , Hilton used to email End of Year stats eg countries stayed in ... so i suggested they make some benefit based on at least xxx countries stayed in, in a year.
Well, countries is the wrong approach, imo, and better approach is the Brands, as Hyatt has done ..every 5 brands get a free night .... but those visits at every 5 brands are once-in-a-Lifetime ... Hyatt and other hotels should reset the brands visited every few years and the "every 5 brands for a free night" would be good