I want a Snow Leopard style update. ALL of Apple's OS's have so many areas that are just absolute dumpster fires right now. I would prefer to see Apple fix the disasters that they've already delivered, like Stage Manager, HomeKit, and Siri.
Flexibility on how long iMessages are kept - want to be able to keep 3 month or 6 months - and be able to mark a specific message to keep 'forever".
Want ability to easily get rid of groups of "health" activities such as steps, distance. etc. Rather than having to do one at a time - keep only 6 months etc.