I don't think Rainbow Rowell can recapture the magic of the original run of Runaways. Sure, part of the problem is that we're dealing with a different generation of readers, now. The original run of Runaways was more than 20 years ago. Maybe 25? I could look it up, but I'll move on.
It was a mistake to pair Nico with Karolina. There was more value to depicting a queer person crushing on a cishet person. Years later, having Nico change her mind and decide she wants to date the lesbian alien after all was just... somebody's wish fulfillment. It didn't make sense in-universe (Nico had only been attracted to guys up until that point), and it didn't serve a broader narrative purpose. I was a queer person who crushed on straights into my twenties, so I appreciated having that dynamic represented in comics. Making Nico miraculously queer after all isn't realistic. My teenage, and then early 20s, crushes did not suddenly become gay for me, just because I wanted them to.
The current team is a bit too ragtag. Nico doesn't have her Staff-of-One anymore. Chase left, Karolina left, and Alex is dead (and evil). Then we have some newer additions that everybody only has mixed feelings about. Doombot is literally a machine, and it is a little unclear to what degree he is sentient; he is kind of just the same joke over and over again. He is a robot, and even knows that he is a robot, but he loves to shout "I am Doom." Gib is a particularly frustrating character, representing the gods that the original Pride made deals with, but Gib himself hardly ever uses his powers and spends most of his time insisting that all he can eat is a sacrifice. Victor Mancha has been with the team so long, he is practically one of the original members, so he is the best new recruit of the lot.
The team is just feeling really down on itself after losing some of its key members and some of its magical firepower. Which makes it all the more galling that there are still SOME superhumans living in a cave, minding their own business, not particularly affiliated with any brand of crimefighting.
A lot of the pathos of the original series is gone, and it's bad. One of my favorite scenes from any comic, ever, was from an old comic when Molly asked their sentient car (long story) about where Gert was (at a time when Gert had recently been murdered). Initially, the machine told Molly that Gert's body was buried six feet beneath the earth behind the Hollywood sign. When Molly protested that she meant Gert's soul, not her body, we saw the machine decide to lie to Molly. It gave a correction, saying that Gert's location was determined to be: Heaven.
It was sweet and sad and meaningful.
... And, now, Gert is back. Her meaningful death was undone through time travel shenanigans. In fact, there were two Gerts. One is a younger version, now alive and well and living with the rest of the crew, while an older Gert from the future claimed Chase and took him to the future with her.
If you love Gert, maybe that's great. You get more Gert for your buck. But if you loved the bittersweet story from 20 years ago, this is worse. Now we're just dealing with some kind of imitation group of Runaways, even with some of the original cast still in the mix.