So, my thoughts after doing a side by side comparison... In general, a lot of the designs seem more soft, and like an older anime style. Which may have been what Arc was going for. Not a fan, but not terrible. Here are additional thoughts on specific models ( - means worse, + means better, x means neither but might have a small issue.)
Annie - A little too soft for me, but still good. The shape of her hair makes it look like her skull
bulges out above the eyes. Not as bad as with Emma, but definitely weird.
Asteria x No change I think.
Chastity + Kinda went the other way of most of the redesigns, and is an improvement in my opinion!
Chloe x
Triangle chin. Other than that, different but not worse. Maybe better.
Emma x Baad case of
skull bulge. But, looking side by side, the old model had it as well.
Gwen --
That new chin... oh my. Please no. Other than that, she could use a little less blush. But, might be an improvement, if not for those 2 things.
Jessica + Nice! Could also use a tiny bit less blush, but doesn't stand out like Gwen.
Kana x No change I think. Although Gwen's new chin made me notice Kana has a little bit of the same problem. Doesn't look as bad on her though.
Lily ++ Not my favorite character, but quite a bit better now.
Luna - Couldn't see her face before. Not a huge fan of the bunny nose, but I might be in the minority there, so no comment. The stripes don't do anything for me either, but I can see how some would be into it. I will just assume this is for those who like anthro.
Lyx + Freckles are cute. Never seen green ones before, but still cute
Madison - More timid, less sexy. Still alright, like Annie, no major issues. Just not as good.
Morgana + Seems a little better to me.
Pixie x No change, cute as ever.
Qarinah --- Wide face, weird nose, inhuman eyes
Seems to be emphasizing that she's a succubus demon, but as demons go succubi are rarely pictured with harsh demon features, but instead traditionally attractive. I assume it's for monster girl fans, but I thought that's what Morgana and Asteria were for. The human form is neither better nor worse.
Edit: it has been brought to my attention that her body and clothes also changed. I didn't even notice, the face was such a huge distraction. Opinion is old clothes were better, both sets of tits are A-okay
Roxy x No change.
Veronica + Marginally sexier.
Side girls:
Alexa --- All features removed.
Cora -- Similar to Alexa but not as drastic.
Ice Cream Girls x Again, the features seem flattened. But, works alright for them.
Rinkos - Again, don't like the stripes much, but it's not for me.
Samantha ++ Much better, except dunno why her cleavage went away...
Claire x Liked the old face a bit better, but not bad. Like the new clothes better though.
Dhena - Chin is better, otherwise same issue for me as Annie.
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Some of the +'s would actually be ++'s, except that the old models were already really good, so improving too much is difficult.
And, hearing why the change happened, I'd like to emphasize that most of the -'s are "alright just not quite as good in my opinion", and Chloe and Gwen could be +'s with different chins... and even Qarinah could be an x with a human face, or even a + with less aggressive clothes as well.
And based on the reason, I imagine Alexa and Cora were rushed to get the update out... Side characters you meet once wouldn't be the top priority anyway.