I have only run Princess once and I am a male so Princess isn't really the weekend for me in the first place but I see both sides to this. I don't think it matters personally whether you run princess every year or not. Some princesses they have used all the time. I would assume everyone has a favorite princess or at least one they are most fond of and don't care as much if they consistently use that one.
Here are the princesses that have been used...
Ariel - 2024, 2021, 2016
Jasmine - 2023, 2019
Rapunzel - 2024, 2021, 2018, 2012
Tiana - 2024, 2022, 2021, 2010
Anna/Elsa - 2024, 2015
Moana - 2023, 2022, 2020
Cinderella - 2023, 2022, 2020, 2018, 2014 (technically almost every year as she was the original mascot for Princess)
Pocahontas - 2020
Elena - 2019
Aurora - 2020 (fairies), 2019
Merida - 2018
Snow White - 2018, 2017
Belle - 2023, 2021, 2017, 2011
Mulan - 2022, 2019
So clearly some have been used way more than others. For someone whose favorite princess may be Merida or Pocahontas its kind of disappointing I would think.
I know on socials I have seen a lot of people wish for some princess adjacent things like Princess Leia or other characters in princess films like the sidekicks or something.