The transfomation tool/distortion tool is a very versatile and for me indispensable tool. In Sketchbook it is almost unchanged since its introduction, has bugs and is not up to date.
I would like to see an update to the transform tool with more control over the distortion by adding more anchor points.
Also, the center anchor (center bias manipulator) occasionally jitters and is imprecise to control. Further, Sketchbook crashes particularly often when using the tool.