I've played the new script and I must admit, I'm surprised it's Akiko's rout instead of Sayori's. Well, it's my personnal opinion since Sayori is my favourite character but it feels even more like she's put aside compared to Hiroko.
Now I think I understand your choice too, maybe each character's screentime is not about some game ballance but about Kyou's personnal affinity with the characters.
Nozomi n°1, Hiroko n°2, Sayori n°3, Akiko n°4, Risa n°5
That's a little sad Sayori may not have her Evil rout to be honnest, but it's your story in the end, so your choice. Also Akiko is cool too, I'll stay tuned for the following of the story :)