Basically the idea is as follows:
When you build a shape, and tween it with a horizontal flipped instance later in teh time line, you get a 'spin' effect as the left points translate to right and right translate to left.
What i'm suggesting is if you have a shape with equally numbered points on left and right, and we flip the points, the left point positions should stay with the laft points and the right with the right...
example: a 3/4 left view of a womans body - breasts on one side, and curved back on the other - but identical number of points on each. the current method would spin the body like a 2D plane, but my idea would automatically create a body rotation tween (which could be created manually using actions and moving points around etc - and i know this sounds a bit lazy
but the point is to get an IDENTICAL 3/4 left and right body shape with a shape tween rather than 'hit and hope' manual point manipulation...)does this make sense
is it even possible? 
am i just trying to automate too much 
... you be the judge.F.
