Wow, I rarely have any real power in my lucid dreams. I always have to find workarounds to convince my subconscious that something is possible so it will let me do it. Like, I can't fly to any useful extent because something in my brain, against my orders, goes, "Wait, I can't fly." But if I close my eyes, which always changes the setting, and say okay, I'm in outer space, then when I open my eyes, I'm on a spaceship floating around, and my subconscious goes, "Yes, you're in space, weightless, therefore you can fly. Acceptable."
Sometimes I get frustrated that I can't make things happen, but mostly I enjoy the ride anyway. The most frustrating thing I've encountered recently is the inability to get out into nature. I live in a city now, for the first time in my life, and I miss being in the woods. So the last time I had a lucid dream, my first instinct was to go out into the woods, but every time I went through a doorway, it was just another room, no matter how much I tried to make it lead outside. When I finally did get outside, the best I could do was the edge of the woods around some train tracks - still connected to the city somehow, still artificial. I was really disappointed - it's been months since I've been out of the city in real life and I miss that so much!
Funny because I see this differently. Dreams are less observerd than waking world. This means that you'll have to create each experience yourself althought the unconsciousness is very powerful the conscious mind is depended upon what the unconscious mind does in the same sense as the unconscious mind is responding to the environmental stimuli in the waking world. From another viewpoint the unconscious mind in a dream does not mediate the environmental stimuli, it creates the illusion of them. It CREATES the environment or you can think that the stimuli come from another plane of existence. This is the same as freedom and restriction in dreams... Because you have to create the environment, and I mean the EXPERIENCE that you see in the field of your vision and bodily senses. At the same time as your subconscious mind doesn't entirely decide which experience to pursue knowing to some extent that, you just must know that for example flying is hard to create and at the same time you must have already known that it's not the same as in the real life where you yourself don't have to create the experience of flying, but will download a vast amount of new refreshing information from 'the environment', the quantum computer, for your subconscious and unconscious mind about your surroundings that the experience structures itself as fairly positive also in the conscious mind without the seeming conscious connections between the causes and effects of the flying experience. In a dream for example something abstract like walking around a tiny Earth gravity center into the earth and to China in a short period appearing on the other side of the globe while feeling the earth slide around you is maybe even more excavating an experience than flying. It's much like as if you didn't really want to spend time on merely flying because creating the experience is 'a trick' and the benefit to the unconscious mind is meager. Maybe the human mind wants to dig deeper in dreams just as eagerly that it wants to climb up into the skies in the waking, these representing the movements of the neural system to gather information from the outside, "the sky", and from the inside, "the earth", "water". The benefit of the unconscious mind is to process information about something that has taken place before you went to sleep, and not create specificly brand new experiences from the base of vague stimuli. That's my experience of flying or doing something extraordinary stubbornly in dreams. If your job was to deliver mail in a flight suit you would see many many dreams about flying every month I assure that. Even taking time to imagine flying while awake might cause flying to activate in a dream just like playing Magic Carpet will activate flying sorcerer game dreams. Same way, driving a car will store memories of driving which will process in your dreams. Being truly creative is the diamond in lucid dreaming.