Often when I copy and paste groups of objects, and continue to patch them with the snap to grid option enabled, I find myself with a patch where objects are partially aligned on the grid and others not, because I didn't align them right after pasting
Instead of cleaning up the patch object by object, it would be very helpful to have some sort of global snap to grid action. Select all object -> snap to grid.
Or alternatively snap to grid could be automatically applied when you paste the objects. That would be even more convenient I guess.