EX:
obj1.AddChild(obj2)
obj2.pixel_x = 100
obj2.pixel_y = 100
obj2 would move with obj1
Also the option to have the parent clip to bounds would be nice.
EX: If obj1 in the previous example only had a width and height of 150x150 and obj2 had a width of 100x100 and was placed at pixel coordinate 100x100 half of obj2 would be clipped/not visible
Clipping would not be feasible.