NicoEli is intriguing, since they don't have the sort of background in the series that NozoNico does, or the natural connection that Nico would have with Kotori (fashion) or Hanayo (idols). So figuring out the basis of each's attraction to the other can lead to some delicious speculation.
I love the detail that Meiling is dressed as a maid, meaning that she's taken over the housekeeping duties once Sakuya wasn't able to do so anymore. It's also a nice call-back to Yohane's origin of how Sakuya joined the SDM, back when Meiling WAS the chief maid. Also, I love the body-worship being done by 'China'.