I like the idea behind it! Basic and straight to the point (though probably easier said than done), but promotes lucidity quite well if successful. Here's my question: how do we train ourselves to use a subconscious primer if we can't check whether we're doing it or not, since it's outside of our awareness? There's not really any way to check if you're doing it right or not (well, besides the lack of lucid dreams, I suppose).