Why is it that more and more keyboards are omitting the useful word processing keys (that somehow find a use within the GUI, as well)? Do they just think that not enough people use them to justify it? I'll admit, I only started using the special keys a couple years ago, but it made typing a much more bearable affair. I don't really use PgUp/PgDn often, preferring instead to move by finer increments using the scroll wheel or the arrow keys, but Home and End as well as Delete and Insert are among the most useful things since the arrow keys.
Smooth scrolling is a butt. It takes too much CPU time, in my opinion, doesn't really look good (on a tablet it looks and works fine, but on a PC I tend to just want to do my work without so much flashiness), so whereever I can, I turn it off. My mouse has that weird button below the scroll wheel that locks it into line-scrolling or smooth, so really I guess I could live with both, but in smooth scrolling mode it's all too easy to send the wheel flying down the page. If they put some resistance behind it I might like it more. That said, I do switch to smooth scrolling on the mouse's end when I want to scroll to a specific point quicker than normal.