In my opinion, the reason why the 'subconscious' is so at odds with lucid dreaming is because lucid dreaming is such an intrinsically rational approach to the irrational world of dreaming in which the subconscious is king (or queen). The subconscious is the embodiment of the stereotypically right brained aspects of the mind and therefore it is diametrically opposed to language in general. I don't think lucid dreaming should necessarily be a war against the subconscious, but I've learned that it can't be way to communicate with it either, because it doesn't communicate in any way that is recognizable to the rational conscious mind. What you really should be trying to do is embody it, as it is ultimately part of your mind itself.

Any communication you may percieve is a product of your 'left brain' consciousness trying to rationalize the passive irrational output of your subconscious. The rational stereotypically left brained conscious mind comprehends linear concepts like language and communication. The subconscious just is.