It's amazing that something like this is possible but I can't think of any immediate benefits. It does remind me of Mylynes' Advanced Vision Control; he claimed to be able to alter reality (in waking life) to his likings, to the extent that he could mentally change the color of his computer screen, walk out of the room and back in without it changing. He took it much, much further (I think the thread might interest you; just search for Advanced Vision Control) but it was also based on lucid dreaming instantly and without having to sleep.