Please add any more objectives other than mentioned below
1) Test Coverage
4) Proof for testing since testcases gives coverage for requirements
You said Requirements traceability. I guess that covers tracing everything like-
impact analysis docs
program units names
Test case docs names
Release details to client.
Not to forget- RTM is also very much useful in tracing the Non-functional requirements. I feel you should have mentioned this point also.
"The most wasted of all days is one without laughter."
-e e cummings