Okay honestly, I don't think the creators who made the Cafe were thinking enough.
People are complaining about how much roleplays they're on the cafe, so heres what I think atelier should've done in the first place.

They should've made a roleplaying cafe, and keep this cafe away from the roleplaying cafe.The roleplaying cafe will be seprated from the normal cafe. The normal cafe will be all about chatting and stuff, and no roleplaying is included. The roleplaying cafe would have a lot of roleplaying and stuff.
E: Okay since this is a bit old, i'll edit some things a little. In my opinion, roleplays spam the Cafe a lot, there are usually 4+ roleplays a day. There was 10 roleplays in the Cafe before too. I'll be honest here, it really does annoy me, so I think there should be a roleplay section. And I also think that there should be at least 2 mods modding it, and some rules on the roleplay section too. I know this may seem like a poor suggestion but, why not.