I Agree. Ishii hasnt been impressive this season in the V league. That reflects on their rankings. I would count more on Sarina Koga as she played really well this year. Seems like her good form is back. I would rather see Mayu Ishikawa play as a starter than Ishii.
Ishii is guaranteed to be one of the starters. The best thing about her is her stamina and she's also a Nakada veteran. She will likely be far more motivated in the NT where everything else is reinforced.
If you noticed, JVA already started pushing Kurogo to be the center. My guess is that it will be Araki, Koga, Kurogo and Mayu as the main PR stars for the Olympics.
All Nippon Airways stated that it will continue running it's campaign for Ryuji Nippon but not Hinotori which says a lot about their current state. Only Yuki Ishikawa is untouchable at the moment.