I'll get a comparison between the two ASAP.
ETA:
Okay, here we go. On the left is Ali on Open. On the right is Ali on Test. They are (
were) identical, as are my settings between the two versions of Pirates.

And here's an overlap (red is old, yellow is new):

The narrowest part of the waist is now lower, but the belt sits higher, giving her a cinched look that I am not a fan of.
I picked the old body type for a reason, and D changing it like that is, IMO, wrong. Considering how much time I spend looking at the back of my pirate, I want it to look right. Now she (well, all of them because they're all the same) looks weird. Plus, when she runs the swing of her hips is exaggerated because her waist is so much smaller. Of course, that may have been their point, but
hullo, this is a kid's game...
Other things - her shorts. Before they had a pretty natural shape, now they're poofy (which makes her lower half look even bigger than the narrowing of the waist alone). The changes in skin tone don't bother me
that much, because I am crazy pale myself so whatever. But, what's up with her hair? It looks practically bleached (perhaps to go with her new completely unnatural body shape?).
ETA Again: You can also see the obvious changes in the lacing on the bustier. Before it was relatively square, but now it tapers dramatically.