There are too many Diamonds as well.

As has been said many times on this forum no individual regardless of status is precious to Hilton. Even someone like Phil the Flyer who spent 12 years in a Hilton might get walked in the OP's situation.

Every hotel is different (even though many Hamptons are almost exact replicas of each other) and although there are brand standards, hotels are managed by different people and companies which interpret the standards differently. It isn't like all Hilton employees must be trained at a centralized Hilton facility before they can start work.

Particular guests, especially those who stay many times at a single hotel, become precious to that hotel, but it doesn't mean that those guests will be precious to another Hilton they have never stayed in.

I get welcome letters saying how important I am at many Hiltons - but these are mass produced and given to several guests every night. Anyway, I don't want to be important - I just want a room (preferably upgraded but no big deal if not) and the published benefits of being Diamond, but of course it is nice if hotels go above and beyond.