Would be nice if you could add an option to move a object according to the rotation on the Transform panel.
e.g. If the object is rotated 45 degree, typing a value in X/Y moves the object according to that angle.
The white marker of the transform tab does not move but the selection within the 9 grid marker does enlarge.
1) Add object to page
2) Open Transform tab
3) Select top centre for transform anchor
The white marker remains at top left (top centre marker is enlarged showing this is selected)