I think that we do need a similar feature in Moi too (I mean the 'predictive stroke' feature of Sketchbook)! I have met its need very often: drawing a free hand curve and needing than to refine it, so that may I have a very smoothly flowing curve, but without loosing its overall shape!

Maybe there is already a way of achieving such a thing in Moi... so, if anyone knows about it let drop a related note here, it would be very helpful indeed! : - )