There's a lot of cool improvements in this one!
I like the merbabies addition. Maybe they'll add pets to that section also.

I hope they bring back the scale modifier for additional parts, also gradients, patterns for the tail and skin, and plain shapes with opacity modifiers so I can add textures to things. I kinda liked that you could change the transparency of the fins in the last one, too.
I'd also like to be able to put separate colors and gradients on the front and back hair parts.

I feel like I should be able to choose different lip, brow, and blush colors for my doll. I wanted my green skinned frog creature to have a natural looking lip color but it's all reds. I liked that you could choose any color you want from a wheel at one point. I'd like if I could do that on all options.

The layer order buttons seem wonky- when I tried to put a flower behind the doll's ear, it stayed on top. I think two of the layer buttons were switched on the extra hair piece section, but I don't remember if any of the others are mixed up.

I look forward to the updates, and will certainly continue to play with this doll <3