You're pulling some pretty wild numbers out of nowhere.
Just casually dropping a 900 potency boost per minute on C&S, giving it a 900 potency cure for no reason, giving it charges so I'm assuming you'd be firing it off twice per minute to boot? Oh and let's give DRK a +20% damage boost to everything it does all the time.
20 second invulnerability? LOL. On top of it then losing the healing requirement?
You don't like current DRK, I get it. The things you're suggesting "should" have been done however make absolutely no sense and it looks like to me that you're just slinging whatever mud you can find at DRK and then bringing in a wheelbarrow just so you can bring some more mud that isn't even there. I'm sorry but it's very hard to take these seriously. All of this is a bit like me saying "Bloodspiller could deal 2500 potency and Quietus should heal me to full and give me full MP".
DRK isn't behind in damage to the point that any of those things you're suggesting wouldn't just boost it through the roof. On top of giving it some pretty ungodly healing. On top of giving it the absolutely most broken invulnerability in the game. On top of it already being the king of personal mitigation.
What is wrong with point blank AOEs? Or FOS/FOD for that matter?Athough Abyssal Drain should have been the AoE combo for Unleash, just need to re-work Unleash into a target AoE while also making Stalwart Soul into a Target AoE and making Stalwart Soul combo after Abyssal Drain and Dark Passenger could have stayed with charges and no MP cost.
With TBN even with physical enemies DRKs mitigation is really good. In dungeon trash you've also got Abyssal Drain which is up for every trashpull that tends to range from 1000+ to 2000+ potency heal on an OGCD trigger. In raids you've got magical damage which means you've got 2 extra mitigation cooldowns to work with. LD sucks and should be changed but hardly defines DRKs survivability. He's pretty damn sturdy outside of the flawed invulnerability.Because DRK lacks survivability
EDIT: Changed some wording because it sounded a lot more oafish than I meant for it to. I'm being critical but not trying to be a D.