There is interactive method to "Scale and Rotate" cell before placement but there is no method to "Rotate and Scale" a cell.
For example if using MS for drawing floor plans and have doors,windows as cells. Then if there is wall with which is not orthogonal and I would like to place door cell in correct rotation and scale, then there is need for "Rotate and Scale" option. An extra option could be added as "Scale and Rotate".