Soul Vessels
These were great because they allowed you to fix the mistakes that you did in your build. Otherwise, you would have to either keep playing your build in that way or start the game from scratch, which is never pleasing. Dark Souls 2 allowed you to respec your build entirely and fix those mistakes at whatever point in the game.
Unfortunately, there was nothing similar to Soul Vessels in Bloodborne, but we definitely want to see them back in Dark Souls 3.
Published Oct. 1st 2015