proper use of <u> and <i> elements

I know formatting for visual effect should be left to CSS, and that <em>
and <strong> should be used to connote the emphasis given to certain
items.  This means that <u> or <i> are deprecated now, but I wonder if
there aren't instances where these elements could be used to provide
structure to your document.  For instance, underlining or italicizing
items often denotes that the item is the title of a book or poem.  Using
CSS to produce this effect would not replicate the structure implied by
the element, just its visual presentation, and <em> would imply
something different than that the item was a title of a work.  <u> and
<i> may not be ideal either, but I wonder if something like them would
not be useful.  Or should one use the <cite> element in these instances
and format it with CSS for the proper visual effect?

 

Rob