Be honest with yourself about your project's business model and commercial potential. Just as specific producers work on specific types of material, so do certain agents.
TV writers need to learn how to take a punch, a mandatory eight count and then get up and go back at it. They also have to know how to throw a punch.
Joke/sketch packets should ALWAYS be up-to-date with your best topical material… nothing feels more stale than jokes about last year's news.