I'll try to explain it with my limited english
We, gerwalk fans are not complaining about the A-stance of the VF-19, it's the LIMITED "back" and "forward" ankle movement which prevents the lower leg to be posed at a much more lower angle. All the other yamato VF's with ratcheted ankles have a lot more forward and back posing.
I've done a quick drawing showing what mommar, chronocidal and me, are trying to express. The A-stance and lower nose are great, but we can't bend the legs at a lower angle -at the ankles- pushing the center of gravity to the back. We pushed the ankles farther to achieve the stance of the first drawing and stressed the ankles.
If it makes any sense, we'd like the legs to be more oblique, having the axis not so perpendicular to the base. And no, we don't want to go back to stiff legs in parallel gerwalk.
Don't get me wrong, the VF-19 is an awesome toy but it lacks a little when posed in gerwalk mode (it's another story if you use a stand showing it flying in gerwalk mode).