I recently proposed a couple of new tropes... neither of them made the cut apparently.
One was based on a Nostalgia Critic comment: "Abuse to Women is Funny", which they rejected saying that it made it seem like they found abuse funny (even though they used to have a trope "Abuse is Okay When it is Female on Male", though apparently they renamed it).
The second being "Can I Say Something?", where you have different characters arguing or deep in conversation about something, someone else asks to say something, and is met with "NO!", while the arguement or conversation resumes. That one was rejected too, apparently again they had issues with the name.