I just got the plugin from tobiasebsen
And with this plug in you are able to syphon from after effects to madmapper.
So you can map live and see your bezier curves if you like. Or bezier lines if you like (with 3d stroke)
I hope this helps . There is a test version for download so you can check it in advance http://tobiasebsen.dk/wp-content/upload ... onDemo.zip
I hope this helps until this is implemented
there is a wish forum if you like to post your wish there.
all the best