Think Sweet Home 3D is a brilliant piece of software.

I have added the additional plugins for advanced editing etc. and it would be great if the rotate option allowed the user to rotate an object in any or all 3 planes i.e. the X Y and Z planes.

This would make things much easier to build sloping roofs etc. as you could make a flat surface object to match size of a roof area and then rotate it to match the sloping gable end of a wall.