Though I agree on Kaori's case, I think she really deserved it as she had been on the junior ranks for four seasons. And it really paid off on this year.
Sui's 3A looks still a bit UR, so she has to work on that before the summer comes, and the package has to be more polished as well to compete with Russians.
As for Riko, more than 3A, she definitely needs better suited SP and FS though I cannot say the current ones were too bad. Just compared with them, last year's Firebird SP was a great vehicle and showcase for her character/personality on ice. Riko is actually older than Rika and Mako, but she still looks younger and skates juniorish than them probably because she is a very tiny girl. I do not think she should be pushed to be more mature unrealistically to compete with Russians, but at least she should be given programs to maximize her abilities and charms of her personality. Well, the same thing can be said to many other junior girls like Rinka.
BTW Recently I re-watched Moa Iwano's JGP performance to be blown away. She is super-talented, but I know she is not going anywhere unless her UR issues can be fixed, which are very serious. It's a shame.
Over all, I think the next year's Japanese junior ladies team are very talented as well and surely I will enjoy watching them competing even though I really cannot predict that they can win over the Russians.