I hate that the iPad Magic Keyboard doesn't have an esc key. I'm so used to having one to easily cancel things (among other things) that its absence is maddening. This keyboard doesn't have function keys either, but as a Mac user I've never really used them that much. (Side comment: I contend that the alt-F4 shortcut for exiting/closing the window is a terrible shortcut. I mean, just god-awful, so un-ergonomic.)
Related: I have a Keychain mechanical keyboard with a good ergonomic layout. I 99% love it, but it has an infuriating flaw as well: it has an esc key, but no `~ key! Sure, it's highly configurable and I've devised a workaround, but my muscle memory for the back tick/tilde key (and the esc key) is so ingrained that I try to type it without thinking and then get angry when it doesn't just work.
Why no backtick? Why del/home instead of home/end? A nearly ideal keyboard otherwise! (Yes, yes, it’s customizable, I know, but it’s frustrating that I have to customize it.











