Duuuuude...

You know, I never thought of communicating with my subconscious (whatever that really is or means) in a dualistic way. Since it worked for you, I would ask it more existential questions. I would ask what the nature of subconscious is, what the connection (if any) is between consciousness and the universe or other minds. I'd also ask the subconsciousness what the subconscious of the subconscious is. I'd try to get deep with it. For me, lucid dreaming is a tool for understanding things like this.