I suppose there's a lot of emphasis on control because its fun, but to me its definitely not the ultimate measure of a great Lucid Dream.

Personally, I rate "going with the flow" way above dream control. My favourite thing to attempt in a Lucid Dream is to explore, without interfering. I follow a dream character home to see how they live, I find out what stuff smells like, I go open that door over there, or I just continue through the story, all the time aware that I'm dreaming.

This is harder to do (for me at least) than dream control, because I'm much more likely to get sucked into some scenario and lose Lucidity. But for me its also the most rewarding thing to do.