Aquila, I understand and sympathize with the feeling that you're alone in your opinions. We've all been there.
But there's really not a logical case to be made about why a strip should go in a different direction. Giz, Dave and I talk about story logic a lot-- you have no idea how much debate goes on before we decide on certain installments, and a lot of it is centered on "would they do that?" But really, the reason we're doing the Doompanties storyline instead of, say, a story where the awkward Chloe of the previous story tries and fails to win Dio's attention is just that the Doompanties idea interested us more. We've had a lot of fun with the "innocence/monstrosity" dichotomy of Eerie Cuties, and lately we've been leaning more toward the "monstrous" side of the coin (even as we and Cassandra work diligently to show a bit more tenderness in Magick Chicks' hardened antiheroes, while keeping them recognizable).
I'm a firm believer in seeing through a project once it's started. Also in the old standby, "If you try to please everyone, you end up pleasing no one." I know neither of those facts are going to satisfy you, but that's sort of my point. (I notice, with some amusement, that after we spent nearly a year fielding complaints that Faith Abbott was too bitchy, now there are milder complaints that she is no longer bitchy enough. Not generally from the same people, but still.) My threshold for how immoral a character can be and still be sympathetic is pretty high, and I think the others on the team feel the same, and I think that's unlikely to change. Chloe's not herself and "Doom!Chloe" has crossed a moral line for sure, but I can still see where she's coming from. I can't relate to her blitheness about murder, but I can relate to the emotions motivating her current crusade.
If the series really has become more of a negative part of your life than a positive one, on balance, then taking a step back from it is probably a good idea. This is all supposed to be fun. Dave, Gisele, Cassandra, Shou and I are trying to make people's lives better, not worse, in our quiet, "few minutes per day" way.
All that said, the "innocence" part of Eerie Cuties is going to reassert itself somewhat in a couple of upcoming installments, in a way that may surprise some readers. We still have the Doomparty coming up, but you got to mix up the ingredients a little.