Just had a chuckle watching your highly polished videos on Youtube, and can see your need for as many tools as you can get and will leave it at that.

So is putting in 6 keyframes really that hard that you need to take a ~120 frame BVH type file reduce to down to the 6 so that you can correct the poke thur problem?  My question was not the general why someone would want to reduce keyframes I already know that part, my question was directed at you and your specific workflow since you have stated that no one does Pose to Pose animation.  Also a FYI using layers in Poser I can put a negative curve of a couple of keyframes to pull the hand back out without having to move a single point on the orignal BVH layer.

But aside from that little detail where are you going to find the BVH (or whatever you want to call them) files that you want to use your reducer on?  Looking at several of the marketplaces there is not a great deal of ready to use files.  And even if you have some pre-built files they are someone else's idea of what they wanted the motion to be.  To try and bring them into your own story and make them match up and seem like they belong together seems like a lot more effort then doing it your self in the first place.

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13