Changing UV parameters per face

Would be nice if there was an option to make UVs properties working only on the selected faces. I know that I can edit this in the UV editor, but when for example I have a simple cube, and every face is placed on top of the others, it's is really hard or maybe even impossible to select the face I want to change the UV on. I have to make different material to be able to select the face I want and still it would be much easier to use normal transform sliders from the Edit UVs.

Is there any chance that you will add this soon?