So, this upcoming March has a special day for me. It is the Spring Equinox when Pagans of various religions not all Pagans mind you. Gather and celebrate the pleasures of flesh for which the gods and goddesses or spirits granted us. And to celebrate that. I'm going to be posting a 7 part story of monster girls banging a poor poor guy starting March 21st and lasting to March 27 or 28th, I can't count. And HERE is the place of where you can vote by March 12th to help decide which monsters will make his fate plesurable.
At the moment, special categories and subcategories are in the works for fan fiction. Right now, it's simply a matter of giving all those involved the time they need to finish. An anouncement will be released when everything is set up. Until then, the current standard will need to be maintained.
Sorry if the news wasn't as good as you hoped, but I do have a bit of good news. In the wiki's search bar, if you type in "harem" the number of results you get is still small. Thus, if you put the word "harem" somewhere in your post (such as an intro or greetings to the readers) it will show up in a search and be easy to spot.
Considering the Succubus' page notes their inspiration from real life mythology, do you think it's a good idea to make trivia points with all Mamono to explain from what creature from mythology/folklore/fiction/... it's based on? I happen to know a few things about mythologies, so I could help.