I don't have any suggestions for how to get a patch accepted, but I will say that I have written a VU meter effect (because I needed to write the meter to a custom device) and found that the system is not that hard to work with. I believe that you will be well served to do your extension here rather than in an in house tool.
All that being said, the traffic on this list is so low as to be dead. I am not certain that anyone is still doing official work, though I suspect that someone is because I saw a release in the recent past.
Good luck, and let me know if I can be of assistance,
Claude