Don't know if anyone caught the conversation between Niruin and another Guild member, but basically he wants to open a brothel. The other guild member scoffs at this "business plan," saying Brynjolf would never agree to it.

Well what if Brynjolf did agree to it? Would it be like Assassin's Creed, where the prostitutes and thieves have a special understanding? Would they team up at times? I just thought it was an interesting conversation and would like to see the idea explored.