I would also be interested in seeing how this goes. Theoretically I think if you associate someone as a LD mentor or guide in general who has a meaningful impact on you then they might pop into your dreams in that same mentor role, but I'm not sure if they would be a proper 'Dream Guide' as such or just your attempt at making one. For example one lucid I had Sivason's avatar came floating towards me and showing me his dream control powers, far superior to mine (long story haha). This was very weird and unexpected but I think because I see him as so knowledgeable about LDing my subconscious decided to throw him in as a guide figure. Whether you can deliberately create a pseudo-guide like that or a full fledged dream guide deliberately, either way, would be pretty cool!