The most dire feature is.......

Undo feature.

Many times I'm typing some very important numbers or letters or some things to rectify that end up with an extra letters added. And then when I want to delete it, I accidentally tap too many times and whoosh the letters go missing.

My very old Palm Zire 21 has a lovely cut and paste (across multiple application k?) and has a fully working Undo feature. Which is why I am still using it (and with apps with data older than Britney...). So Apple...why?