I think Fusions till lacks serious abilities to move scale rotate quickly objects in relationship to grid freehand positions.
Fusion has to be able to repostion the move widgest by hand and snap to the grid and not only snap to excisting geometry.
Check the Rhino video and you will see the extrem visible shortcomings in Fusion right now.
Rhino Fusion Screencast:
https://drive.google.com/file/d/0Byzv_NlyKp_2dHZ1S200ZEV1Wjg/edit?usp=sharing