I don't think it's necessarily Artgerm who designs a bad looking Supergirl - it's the statue companies who focus on the wrong art that's causing the problem. This one with the cat and her weird face pale in comparison to Lau's other Supergirl pieces that weren't translated into a statue. Cuz what I think is happening is a company is telling Stanley what to draw instead of letting him draw what he wants (kinda like how after the fact Sideshow had him draw the first Supergirl PF based on the design they made without him).
Sideshow's newest Supergirl has a great face. But her costume, cloud base, and awkward pose make it really unappealing, imo, and I really believe it's Sideshow who told him what to draw instead of letting him do his own thing. I mean, look at Stanley's designs for the first Sideshow Ivy, Harley, and Catwoman PF's. They're gorgeous. And I bet he was allowed to draw what he wanted instead of it being the other way around for those three.
It's a shame this one is so unappealing. But at least it's encouraging me to get someone to retool/repaint/repurpose my Captain Marvel Sideshow piece into a Supergirl piece =)