It's some really good stuff you are sharing I will look at this video when I have the time.
Maybe you can look at Richard Bandler Video, Persuasion Engineering, it's a 8 Video program of around 2 hours each. There is also one in Audio and a book about it, if you didn't study it already that's some good stuff in my opinion.
From what I'm learning, the most important according to what I have seen until now seems to be your personal state, at least according to him. So for example if you feel like shit, no matter what you say it's not going to work, or at a very low ration. So for example if someone can learn to amplify the self effect through hypnosis training that would be

, I have been watching video on acting so I can laugh more easily for example.
I think I'm getting better self effect with BW now thanks to that which is to say I can switch from playful to anger from easily for example. Also sometimes I read some guys are trying to go against placebo effects like it's a bad thing, if you are trying to test the product that's probably not useful but if you are just here for the results or the fun instead of preventing the placebo I would amplify it as much as possible, placebo is hypnosis anyway.
Another point I think that I used to miss before, is voice tone, sexy voice, playful voice, happy voice, sad voice, etc, learning to recognize them and use them anytime you want, whether internally in your head for self effect or to affect others. It can sound so simple that it's often overlooked.
One exercise someone can do is while watching movies/series pick is to pay attention to voice tone actors use, then repeat it while your are in your car when no one can hear so you can practice easily. I practice each time I'm in my car instead of listening to music, and just practice voice acting like that put in me a great state before a date or any event where I perform socially.
Also the real wolf of Wall street seems to believe voice tone is very important, which I think he got from NLP as he seems to use the exact same technique, word and pattern while talking.