The ECB plans to redesign the EURO banknotes. It carries out a survey till end of August 2023 for EU citizens to express their opinions.
https://epsilon.escb.eu/limesurvey3/486783?lang=en
More info about the process here: https://www.ecb.europa.eu/euro/banknotes/future_banknotes/redesign/html/index.en.html
I don’t even remember when was the last time I used banknotes. Not since COVID. I probably wouldn’t be able to recognize the banknotes anyway so go right ahead, I guess.