I've picked up on most of that stuff by now except the use of chain canceling. I am not sure how I feel about the approach to heavy attacks and chains. It's kind of counter intuitive how they often are less useful than the basic primary attack.
That said, I rarely charged my attack so I found it pointless pretty early on. Only charge my axe on bosses and mace for the sweep. I've also only been playing the Witchfinder dude. I think going non-rapier is subpar, but I haven't gotten a real rapier upgrade since level 2. Rather use a power 40+ axe than a power 5 base rapier.