Really interesting rework, lots of good ideas!
It has everything I'd love to see for DRK:
-Actually having to maintain Darkside (there's nothing to maintain right now because you're going to use Edge every 10-20s anyways)
-More MP generation and spenders (600 every combo feels bleh, I loved having at least one DA available after a combo)
-More choice and decision making, especially regarding survivability (as opposed to currently just keeping the combo rolling and using CDs when they're available)


I do enjoy the current DRK, but I miss the fast-paced 4.5 iteration along with its ability to turtle down and become a true blood knight (pop the tank stance, double your MP gain on Syphon Strike and turn Blood Price on to watch your MP bar explode, then spend it all on DA Souleater/Abyssal Drain and TBN, and laugh like the undying bastard you are).
You know, being an actual tank and not a DD with a safety cap and a box of bandaids...