It would have been nice if, when I took my new Mac out of the box and turned it on, it would have given me a setup dialog with the choice of a traditional Mac configuration, or an iPhone-like configuration. That would have saved me a lot of grief, I suspect it would have made a lot of other people much happier too.
Well said, and how true!
By way of example, I accidentally discovered that sliding to the right in Contacts reveals a "delete" button for the card I've selected.
[rant] Now how on Earth is somebody who's never used iOS supposed to know stuff like that? It's not the least bit intuitive, and I suspect I'll overlook numerous similar things because I don't know where/when to look for them. [/rant]