I hope we get to spend some time with Tsurukoma as she transitions into the Geiko life. Imagining her living on her own is so funny, but also I wanna see how the change in the environment will affect her.
Tsurukoma is way too important a character to just casually toss aside after leaving the manor. She's been there since the start so I don't doubt that she'll continue showing up or getting spotlighted. Especially if ones like Momoko can have long storylines dedicated to them. If nothing else, it provides for a new perspective in stories about a new geiko trying to make it on her own to contrast Momoko, who's an experienced one at the peak of her profession.
But this chapter does highlight how IMO Kiyo's biggest strength in the story is her biggest weakness on a meta level: she's not much of an actual character. She's just a living sounding board or a way for characters to calm down and come to some realization about themselves. While that might be good, it means everyone else is more interesting than her because she seems to have no real desires, motivations, goals or personality beyond "cook meals."
I hope at some point we'll actually get something about her that actually shows her to be more rounded than that but as it stands, it pretty much means that she's ostensibly just a supporting/background character in her own series as everyone else are the ones with actual personalities and storylines.