I could be wrong about this, but I thought someone at Lego had commented on the license agreement for the Harry Potter theme, indicating that the agreement was between Lego and Warner Bros. Because of this, they are only able to create sets based on the movies. Things/scenes that didn't appear in the movies are off the table for potential sets. I can't find it, but this specific comment may have been in relation to requests for the common rooms/dorms. So, while I have no evidence, I think Moments sets of the Hufflepuff and Ravenclaw common rooms would be off the table. I could be entirely wrong about all of it.