The only few things I’d put on my wishlist are a mini Apple Pencil for the PM variant (if you’ve used a Samsung with the S Pen, you’ll understand that they’re pretty good to have) and the ability to do transparent widgets and remove the app labels from underneath the icons for a more clean Home Screen look.
I would really love a notifications overhaul for iOS 18. Just leave my notifications on the lock screen. I don’t want them to be banished to the notifications centre, never to be seen again.
And to parrot many others, unlock the app grid and let me place icons where I want.
Would also be great if HomeKit would show more than just a single row of scenes that requires a lot of scrolling.