When I went to go and look at the roleplays going on on the site, I noticed that there was an immediately present option to filter things by the openness of the game, so you could filter out closed RPs. Then when I went and looked at the advanced search features I saw that it lets you filter down to other things, like subgenre tags, and that's also really nice to have. The one thing that's missing, however, is being able to narrow the search down by posting expectations. It just seems like the next logical step for search filtering, since you can filter basically everything else. It doesn't need to be an option presented with handy buttons at the top of the forum, like the openness filtering buttons, but adding it as an option in advanced searches would work just fine.