It sounds like a great idea. Sometimes it can be so overwhelming when I become lucid, I don't even know where to begin. I know people have said that you should have an idea of what you want to do once you're lucid, and trust me I do, but when it all actually happens I'm usually just left kind of stunned. It would be great to be able to quickly visualize a familiar territory and sort of stabilize the dream further by going there. In theory it might also help you stay lucid, because you should realize you are in your familiar lucid dreamscape if you suddenly begin to lose lucidity. Definitely going to try this