Okay, I really don't care how unpopular this opinion is, but Ragatha's character was a hundred times more successful as the main character than both Jax and Pomni combined.
She clearly has parallels with the main antagonist of the series, Caine. Obsequiousness, the inability to build healthy relationships with people, the desire to make people happy, and the "bad" parent. She could really be a trigger for Caine, because his creator is abandoning him in favor of someone else.
There was a real opportunity to build a trusting relationship with Kinger as a family, to become a second Abel for Caine again. Later, it was possible to build a great conflict out of this, given that Kinger turns out to be the creator of Caine, which could really feel
ike a betrayal, because Ragatha has known Kinger for many years, he is the closest person to her in this circus.
A relationship with Jax that is not built on indulging buller. Jax is literally the character who pulled out her worst features from Ragatha, features that she doesn't want to show to anyone and is ashamed of. They also have their own history and obvious parallels. Ragatha could have her own worldview about how important it is to preserve humanity and help people even in the digital world, in contrast to the philosophy of Jax's archetypes.
Gangle and Zooble, whom Ragatha really wanted to be friends with and showed interest in, but felt that they did not want or did not trust her enough. Her fear that after the scattering of Ribbit and Kaumfo would have been a great motivation, why she did not want to leave these two alone, or for them to feel unnecessary, because she had already seen it 2 times.
Ragatha, who would learn to be tougher while remaining a kind and caring person who, unlike Jax, could begin to open up to people, even if it scares her.
I understand that you don't have to be a main character for all this, it can even be the arch of a minor character if you don't give up on her, but for me it's a hundred times more interesting than anything that Pomni and Jax offer us.