How would you categorise or define (concisely) beginner/intermediate/experienced lucid dreamers?

For the purposes of my study and interviews I’ll be doing I’d like some way to qualify a persons relative levels experience with lucid dreaming. Robert Waggoner describes asking an audience to put up there hands if they’ve had a lucid dream, if they’ve had under 50 LD’s, under 100, under 200, and then over 200. That’s one way to gauge, however lots of people wont have counted, though they may be able to approximate. Also 5 short lucids may qualify as less experience than 1 longer or high quality lucid dream.

I could also describe newbie, beginner, intermediate and advanced criteria, and let people self select. Any thoughts on what you would consider relevant in these criteria? These are possible categories but I’d really welcome feedback on how to make any category more accurate.

Newbie-less than 15 LD’s, often poor dream recall and not yet established any regular LD’ing practices
Beginner-over 15 LD’s but probably less than 80. Dream recall is good at times but still quite inconsistent. Stability inconsistent.
Intermediate- Often able to Lucid dream. Able to carry out experiments well at times but still quite inconsistent either due to dreams being often of short duration or lacking control of reason and will.
Advanced- Very regularly able to induce and sustain high quality lucid dreams. Able to sufficiently carry out most dream experiments.
V Advanced- had over 500 LD’s or so. Has had a number of what could be called “super-Lucid dreams”, which the dreamer strongly realises the nature of the dream. Examples may include advanced flying/able to totally let go of fear because of absolute knowledge of dream state. May have taught Lucid dreaming or witnessed students of lucid dreaming.

Tnks a mil

P