I don't think we can sideline conscious mind entirely, it must have a significant role to play otherwise it would not be there.
The characterisation of mind into subconscious/conscious also is rather simplistic. What we have is a range of degrees of consciousness. For examples of different conscious states : asleep, awake, coma, hypnotised, drunk, dreaming, hallucination, day-dreaming, epileptic fit; these are just a handul of well known broad brush conscious states but in reality our state of consciousness varies continuously from moment to moment and is constantly mediated by the hormonal state of the brain. The deeper levels of consciousness act like reservoirs of our deeper volitions, and stilling the frenetic activity of consciousness I guess puts us in closer touch with deeper elements of our psyche. I think we have a way to go before we understand all these things.