Yes i know about this 
I don’t think so. Actually, the absolute arrangement allows us to set the coordinates of is child components from the designer and the block editor, my extension allows the user to set it him self by dragging the components registered in any place he want and not inside a specific arrangement as it will overlap on another components
But still, i developed another extension which have a block very similar to the absolute arrangement which is my Component tools extension’s set x,set y and set z blocks.