Commonality across controls.

Slider controls with numeric input to set exact values a la Profile/Transparency/Blur controls. (c.f., Nib size/Smoothing versus Speed/Delay 0 - 5 secs).
All input boxes with dropdowns to respond to Wheelie mouse action (e.g., Stroke shape fails this).
Replace direct entry Controls with the same capability as Wheelie action to alter values (scroll +/- 1 unit, Ctrl +scroll +/- 5 units, ...).

Avoid overloading existing controls.
The highjacking of the QuickShape tool for Smart Shapes.
The hiding of the Smart transform option.

Xara shapes have a Rotate display of the current angle (0° +/-180°).
Do the same for H&V Skew.

Acorn