Originally Posted by ChienAboyeur 
How reasonable it is to add a tutorial to a game that is supposed to be for players who can figure things out by themselves?
It is diversion of resources.
I think it's a lot more reasonable to give players a short introduction to the controls and the basics concepts than to create an entirely alternate mode for the entire game.
Don't get me wrong, I think you could relatively easily up HP and attack power, but I think From Software cares a little bit more than that about what the game is. It'd be like making an Easy mode for an Adventure game and just, I don't know, offering the answers for each puzzle if they aren't solved quickly enough. The game is designed encounter by encounter.