That’s it. The only other thing to do is volunteer. The way for to get work done that you want to see done is to do it, not wait for somebody else to do it.
That’s not exactly easy to do in a commercial category. I’ve tried a few times to get listed in a gambling related category (not using my own domain as one of the three needed). I put in good descriptions and selected appropriate sites. How do I know that? Because all three of those sites were added to the category on the same day I got an e-mail saying I was rejected. I don’t know about anyone elses experiences but I would be surprised if anyone without visible experience was allowed to edit a gambling related category.
The non-commercial categories on the other hand are painfully easy to get into. But what’s the point of that?