Besides, about the whole perfectioning discussion, I believed too there would be limits to LDing, but I've seen too much to still stand by that point. There are people who are lucid every night, and more than so, have forgotten what a non-lucid is, since years ago. A namely example would be
Writerscube. But there's even more that that.
Some Dream Yoga monks have perfected their control over dreams, that they are lucid while awake too. There are Nagual shamans who are dreaming while awake.
I can't sadly bring evidence to this, because I forgot the sources, but that's completely out the point I'd like to make.
The real point is, whenever I thought some level of skills would be the non-plus-ultra, I read of someone who had gone well past that. So I'm asking a question, what's the point of putting limits in front of yourself in the first place? To hamper yourself in your possible achievements?
Who has the right to say where perfection stands? We have started to explore the Lucid Dreaming world systematically only recently, so any limit we put in front of ourselves cannot be confirmed yet, thus there's no real reason to put it in the first place, is it? If one wants to go as far as (s)he can, (s)he has only to give his/her best, and see where one ends up.