Not sure how they decided to put the attention to detail into the AM III and not some of these JB classics. Though they did put a lot of work into the 11s and some into the 3s, so maybe it's a matter of time. Sure, the 4 lace tabs, and height (ex. BC4), and mesh angle, but not the shape. Maybe b/c the AM90/III is a model they pump out in way more volume, and they plan on using the new shape for all of those GRs eventually so it's worth the time/money.....Who knows.
I wouldn't hold my breath that the 4s will ever get respectably close to the correct form in our lifetime. If you don't like the current shape, better to just move on...sadly.