Wait...
Runey you're going to let us add Ren!?
TBH, the first time I played through Nia's story, the Kali event where you visited her parent(s), and with that teaser dropped a little later, I was pretty convinced that we're getting at least one of the four VERY soon:
1. Ren
2. Drow
3. New Character
4. New Event that complicates our relationship with Lin
My money is on 4 being the most likely, with 1 next, followed by 2, then 3.
That's my baseline assumption, based on the 3 blank slots for elves. That said, I'm replaying from scratch, and haven't completed the Elven Training Event.
Well, the three beds are presumably for the three girls already purchased (Nia, Sylvia, and Ann). Granted, expansion is possible because we've had modules that could be expanded (The Bar) already, and I doubt any of the three would object to a couple days of inconvenience if it meant more slaves were free. With that said, I'm pretty certain Ren wouldn't require expansion and she'd just end up crashing with Ashley. The Drow, however, would probably require a basement or something.
EDIT 1: Added some context to the first quote response.
EDIT 2: Fixed some OCD problems.