I can relate to that pdunc. My LDs are a bit sporadic, but I had a long one earlier in the year that was like you describe. There was lots going on but my memory of it shortly after was a bit hazy, like it was a regular dream, even though at the time it felt crystal clear and I knew I was dreaming all the time.
I think what might have happened is that although it was clear, there wasn't much complex detail in the dream scenes, and I have a suspicion that my mind was playing a trick that it was fooling me that the scenes were of high lucidity when in fact they weren't.
Although it was a long lucid I felt rather disappointed at the end - like something was missing. I've had regular dreams that were more rewarding.