I was wondering if I should always mention the name of the work I'm asking about in the title of a question.
There are no general site wider rules I'm aware of (nor, frankly, any reason to bother adding them).
My rule of thumb is: add work name in the title if the following is true:
- The question wording is generic enough that I can apply to a multitude of works
- The question title isn't already too long and in need of shortening
Otherwise, I skip. The reason to skip is that most people viewing the questions would see the first tag (which is typically the work name) right next to the title anyway.