Wouldn’t it be great if you could at any time pick a level (say NG+) and then fight any Boss you wanted to fight. You could do certain fights over and over. Ornstein and Smough, Artorias, the Smelter Demon, the Pursuer etc.
I am stuck playing DS1 and 2 as I don’t have a machine that will handle DS3. But when I do, damn I will have a lot of good games to play. My wife will never see me.