i just noticed that the pictureframe discussion was closed before I had time to voice my experience.
I have used the picture command (previously known as pictureframe) since Rhino4 and one of the best things about picture is superiour sampling, the ability to have it in 3D and also have multiple images accessible at the click of buttons when I put them on layers.
Rotating, scaling and aligning them can be quickly done with the normal tools and the gimball can be used too.
And the materials opacity can be sat to 50% if it needs to be transparent.
So to me there is no looking back, and I use it a lot.