I wish they would. I've had a 10 night July stay booked at the Marriott London Park Lane when it was a Cat 7 and before peak pricing. I knew it would likely be my last stay there, as Cat 8 + peak pricing is just too rich for my blood. After several years staying there, I'm sad to realize that my last stay at the Park Lane is already behind me (as I think this July's stay is unlikely to happen).