WOW, that's a lot to take in. There is some great info there, you just have to decipher what will work for you. The great thing about this sport is that we all start with the basic fundamentals and the harder we work the better we can get. That being said a good coach will see where you excel and help you focus what you do well while finding the small changes that will make you better. As many people said no two people ski exactly the same, which is why the sport is so fun to watch. So my best advice is find what works for you and slowly make changes that you think may help. It sounds like you understand how to ski you just need to find what will work to make you better.
Like you said before, why put more weight on your front foot when you can make equipment changes to accomplish the same thing. The only answer for that is personal preference. I think some skiers like to make equipment changes while others will try to use body position to accomplish the same goal.
This sight is awesome and all the insight is great.