background image "sticker" option

when adding a background image in the viewport, we can set which axis want to see it, like left, back, front, camera, all views, etc. But I miss the option of to view it permanently whatever the position, or rotation, or if you are in ortographic or perpective view.

Somebody can think, ok, if you want to see it as a ref, you can open that image in a image editor window. It's true, but having it in the 3d viewport is cool at the same time we can save space avoiding opening to much windows.