Zodiac VAs could be less fodderish than than normal ones by the virtue of them being directly based on japanese actors (don't make them immune to clowning as we saw with Aramaki but I don't think he'd draw them getting one tapped by straw hats like Egghead VAs)
Don't expect anything from others
Chaton and Momousagi are both going to be big in Wano Act 4. Momo = Momo, and Usagi means rabbit. I have them as part of Fujitora's marine rebellion. Chaton being named after a pig interests me in terms of a mountain.God connection, but Momousagi's name indicates that she's going to interact with Momo and Carrot.
Several aspects of Gion's character reference ozashiki asobi (お座敷遊び,?, literally "tatami room games"), which are games played with geisha in teahouses:
Gion is said to be skilled at all of these games.[5]
Gion's name is likely a reference to Kyoto's Gion district, which is famous for its geisha and has teahouses where ozashiki asobi are played.
Gion's sword, Konpira, is likely named after the game called Konpira Fune Fune
I think Fujitora is going to send a small rebel Marine Force to Wano to establish relations with Wano, and protect the country from being attacked by outside forces.
The WG hates Wano, but the Marines are likely overjoyed that the country is now open to trade and has leadership they can actually negotiate with.
Fujitora and Aramaki also seem to move in opposite directions, so Fuji making peace with the country Green Bull invaded fits well, and give them more beef.
Since Chaton and Momousagi seem to be relatively important and haven't done anything yet, and Momousagi has a lot of random connections to Wano, i think we'll see them when we deal with Pluton.
Which is probably going to be pretty soon, because now that Imu is active, they actually have the manpower to handle fighting pluton.