Before revision:  Finally we write out expressions for the convex quartic locus of the incenter for a generic Poncelet family, conjecturing it can only be an ellipse if the pair is confocal  .
After revision:  Finally we write out expressions for the convex quartic locus of the incenter and excenters over a generic Poncelet family, conjecturing it can only be an ellipse if the pair is confocal .