It would be great if the leg module had options to better prevent intersection when fully bent.
It seems that some rigs handle this by having a 2-jointed knee where the second joint overlaps the first when at rest, but offsets as the knee rotates, allowing for the upper and lower part of the leg to be nearly parallel when the joint is fully rotated. Not sure if that is exactly the right idea, but anything with a similar result would be extremely helpful.