My art style is gurokawa ("Creepy cute" or "grotesque cute" in the west.) So a tag for those games would be very helpful. Thanks for reading, and have a nice day.
From what I remember, tags are add based on popularity. As in, if a lot of people search for a specific type of game, then a tag for it is added.
If I remember well, tags have been removed in the past for being unpopular. The best chances of a new tag to be added is for a lot of people to start searching for it first.