Tests are rapidly accessible. I once saw a test management system where it took more than 30 seconds to navigate to a single test from the top level of the system. It discouraged test review and test development. Design the system such that you can access a given test in no more than a few seconds. Also, make sure the tests are accessible by anyone on the team.
Tests are traceable to a test outline.
Do not automate tests that can not already be executed by hand. That way, when the automation breaks, you will still be able to get your testing done. Furthermore, if your automated tests are connected to a test outline, you can theoretically assess functional test coverage in real-time. The challenge is to keep the outline in sync with both the product and the tests. Tests are reviewed, and their review status is documented in-line.