I think it would be nice if you could see in the history palette when an image was last saved. I sometimes find myself trying to remember especially when you go back in the history and want to go to where you last saved.
Also, there's still the bug where you cannot delete individual points on a path when more than one layer is selected in the layers palette. That one's been around for at least the last 2 major versions of PS.
On your first point, you can acheive this now by opening History Options (on the panel menu for the History panel), and enable "Automatically create new snapshot when saving".