Hey, thanks for re-posting the pics, Otherworld! Judging by the S6 pics that were taken by same person(?), the new 'figs are only a tad taller than traditional minifigures, so the sets probably shouldn't be too over-sized.
The figures aren't all that bad, and they're definitely a step up from Belville and Scala. The fact that the 'figs are comprised of four seperate pieces (hair, head, torso, legs) will most likely be a big selling point, as most little girls like to change the 'outfits' of their dolls. My only real complaint about them is that their hands (regular minifig hands) are far too big for the twig-like arms.
And if I'm not mistaken, the third figure's hair is the same as the S6 Spacewoman (S2 Pop Star hair in blonde), so I'm guessing that the hairpieces are compatible. That's pretty good news, but the hairpieces on the first and second 'figs fall to about their shoulders, so they wouldn't fit on traditional minifigures (no neck!).