Seriously... in my opinion... the last thing we need is another room. Having 4 is quite a number already, and then some of us also moderate in #Charm.
There really isn't much else we need here, public room, R rated room, rants room, systems room. Even that seems a lot, and many people don't use the rooms much. RP and discussion can co-habituate, and if some people can't handle that, they might not want to use the public rooms for RP in general. It's easy to create your own space and invite people in as wished.
If the discussion (if being disruptive) is appropriate for #Elliquiy, then it's fine to nudge people over there to de-clutter the RP. Otherwise, really that's what the room is for. 18+ discussion and role play. It -is- the Elliquiy living room. If you want to go ahead and do naughty things in the living room, you're going to have to expect that people aren't going to just stare blankly, but will continue with their workings. Sure you can ask them to be quiet, on either end of the scale, but if they choose to continue, that's really all that can be done.