I must admit that I havn’t used the addon myself, but it looks way better or more stable than IKB. But as you say I never felt that IKB was really that good for CA work. It could be good for certain things but not a solution that will take traditional rigging away, not yet anyway.
This IK solver also look very promising. In the end of the thread you can also see the latest preview with a node based workflow. I don’t think it is released yet but looks quite powerful.
https://blenderartists.org/t/ghost-ik-virtual-inverse-kinematics-bone-physic-bone-ik-c/1101771