The Cunctator writes:
Deprecated isn't a great idea; we want to restrict names to ones that don't have meaning only within a Wikipedia context; they should have meaning outside of Wikipedia.
One would want to keep such a 'deprecated' link only if it was linked-to from outside pages. I can see us occasionally wanting to keep a well-known title even if it would otherwise be dropped.
On the other hand, I'm not sure this actually happens much in the real world.
-Matt (User:Morven)