Which DRK was the best

[Kyzrath]

Also, Ranged classes only have one combo too and noone complains about it, so it should be fine for having a tank like that as long they have other stuff making it interesting

Plenty of people complain about it, it's not our fault if you don't read discussions about other classes. And still, Paladin has a few combos branching from Riot Blade with ShB. Warrior has the same. DRK is now a 1-2-3 tank with no Dark Arts left to boost skills we might want to boost, Salted Earth's cd was doubled and its potency reduced, Dark Passenger is just gone (you can claim it's replaced by FoS all you want), Blood Weapon + Quietus no longer works... Hell, Blood Weapon no longer functions as Blood Weapon did for 4 years.

Said tank has very few things making it interesting now.