Every product has quirks and idiosyncrasies that can drive us to distraction. Charlie Sorrel has a few on iPad Pro:
If you want to do anything with a file, or selected text, on the iPad, you have to use the share arrow. It’s a primary interface element of iOS, and yet it’s slow to open (even on the 2018 iPad Pro), and it can’t be accessed from the keyboard.
iOS needs real keyboard shortcuts.
The only spellcheck on iOS is in-line. That is, you get a red dotted line beneath any word that’s not in the spelling dictionary. That’s fine, but it misses correctly spelled words used in the wrong context, and often it even misses misspellings. A Mac-like spellcheck would be great, with a popover window that flags grammar and spelling errors/doubts one by one, so you can review them.
The list goes on. iPad Pro users want the device to be more Mac-like. What do non-Pro users want?