I don't really ship Kim with Chloé, as while I like both of them in their own rights (and upcoming development in Chloé's case), I don't think they make that great of a romantic match, so I would be open to Kim and Alix if that ever happens. At the least, I would love to see at least one new episode where they have a fun rivalry again like in "Timebreaker". I really like their rivalry and hotheaded personalities colliding, so whether that develops into anything romantic or remains platonic, I'm all for seeing more of it.
I think they're an okay ship, I'm neutral with them tbh. But I definitely DO NOT ship Kim with Chloe either. I had watched the recent episode of ML and really liked Ondine and Kim together. I think they're a lot better suited together than either of those ships.
As for Ondine, she's too awkward in character design for me to take seriously, like something out of Puppy Dog Pals (a low-budget Disney Junior show for preschoolers). I know Kim is a bit of a "meathead" and Alix has a competitive rivalry with him, but she is a more rounded and believable character (compared to a forced character of the day), whose interacting with Kim actually makes sense and could pay off, especially after the way Kim was jilted in Dark Cupid (with no epilogue for his troubles).
As for things currently happening in Season 2, I honestly don't know what direction this show is going. Me, I would just takes some interesting concepts from this season that work and pretend it never happened.
While this pairing may have flaws, it wouldn't be one where Kim is a passive buttmonkey and Alix is Ms. Right-All-The-Time, and it wouldn't be too far off from pairings from other works. Also, it wouldn't be the definitive OTP of the series.