This feels weird to be nitpicking about, but some of the boob lines look really stiff/painted on. Specifically Ann and especially Svetlana have this made-out-of-cardboard impression. Compare that to Anja or Christina, which look a lot more natural. The way the shading and shaping is now, it looks off.
Anja kinda looks like she's in her 50's, with her twin not far behind. Some of that is the hair coloring, some of that is the way her face and head are drawn. I don't remember what their actual age was.
There's something else about Ann...either her body is a bit narrow for her head or her shoulders/arms are kind of stiff. The costume itself is nice, but she just doesn't seem right. Arthur is a bit better. (I do say I much prefer this Arthur to the original.)
Hamilton looks mostly okay, though it feels like his standing pose has his arms too close to his body so it comes across as stiff.
I think I like Christina the best. I'd place her about her mid to late 30s. Another case where I think the new version tops the original.
Roger Steel came out pretty good. Body looks a bit more natural in shape, not too stiff, though his sleeves extend down quite a ways before they attach to his torso. (I imagine that makes them pretty roomy on the interior.)
Mei Ling again looks like she's old, with the graying hair and everything.
All around, it seems like the cast has gained 30 years or so over the originals
(especially Ann, who looked like she was originally 16
), but I don't know if that was the intent.