i didn't read anything above but watched that last video and i'll say that your leg kick looks uncomfortable and exagerated...it looks like it even slows you down, you're not transfering your weight with any speed or power, step into the ball and attack it...you also don't need to lift your leg so high that you can do crossfit box jumps
The object of the kick is to load onto your back leg, you just lift the leg in a very exaggerated manner and then stomp down to get it back on the ground in time to swing, stop that, LOL.
The leg should come up as you turn your hips back, the more hip turn the higher the kick.
When you stomp forward you are keeping the forward leg bent so it acts like a shock absorber for the rest of the swing, all your energy is absorbed and lost.
The front leg needs to be planted and firm.
once you stomp, the whole body drops down, this gives you the illusion you are turning your hips but in reality, you are not. I would try to think about bringing your front knee in front of the back knee in a turning motion.
It doesn't need to be high or twist yourself in the ground, the goal is to build pressure on the inside of the back knee with 80% of the weight on the inside of your back foot.
If you feel those 2 things you are loaded and ready to turn forward, if you get a good pitch everything will happen natural from that load, just relax and let it happen.
Teaching hand hip fluidity to someone who isn't a "natural" is pretty difficult. After looking through your videos, I like your very first video the best. Your new leg kick?? if that's what you want to call it looks so forced, it makes me cringe. The reason most people have a leg kick is simply as a timing mechanism as it is not necessary whatsoever to generate power and drive from the hips. Point being, you need to get rid of the leg kick (or find one that feels way more natural) and work on connecting your hands and hips. This a great video with some mashers to show you how in sync their hands and hips are.
http://www.youtube.com/watch?v=TMpd6LsNvSU
With that said, your hands should always follow your hips. You should get to a point where you don't even have to think about your hands because your hips (should) automatically drive your hands with them. When your front foot lands, your hands should be back and in the loaded position wherever that is in your swing. My suggestion would to be start at this position and fire your hips and hands at the ball so you know what it feels like and slowly step by step work backwards into your full swing.
What does the "keeping the weight on the inside of the back foot" help with? Is it keeping that back leg ready to push off with, or what? Thanks.