Modern Taskmaster had a similar ankle set up to that ball joint configuration. The thing I need ankles to do better at this point is move upward. It’s limited on just about every figure that would benefit from it. Those deep crouchers, Spidey, Daredevil, Wolverine, Hulk. That and limited neck motion are tw/o of my biggest pet peeves with current action figures. The neck thing already has a solution! Hinged necks usually have better upward range than barbells, as long as enough plastic is cut from the back of the neck for the neck peg to clear. This shouldn’t be a problem on any figure at this point because a solution exists. But the limited ankles, that needs a fix after all
these years.