See, the thing about Dark Souls is that, in terms of the combat itself, it's already a fairly easy game. Most trash mobs in the game can be killed in 1 or 2 hits without any risk of taking damage provided you know what their weaknesses are, and when it's safe to attack them. Pretty much the same thing can be said about the bosses too (although to a lesser extent), there are generally fairly simple procedures that can take them out, procedures that any old cack-handed player can perform easily enough provided they bother to give it a little practice.
The real difficulty in Dark Souls, the thing that separates Dark Souls from other games, is that it's very easy to die. Very easy. Just as pretty much all trash can be taken out quickly and easily if you know how, the trash also has the potential to take you out in short order too, if don't bother to work out how to prevent it. This means that when you're still learning a dungeon, meeting new types of enemies and bosses, it's pretty much an inevitability that you'll die. Not because you weren't quick enough on the trigger or failed to pull of that perfect combo you needed, but because you simply weren't prepared. This is the difficult part of the game, and it's also the part of the game that really shines. Once you've figured out how to kill an enemy or navigate your way through an area, that particular part of the game will be easy for you. You just have to figure it out.
I don't want an easy-mode in Dark Souls for the same reason i don't want Orwell or Huxley (if they were still alive) to paraphrase their books so a 12-year-old could read them. They'd just be gutting all the intricacy and depth out of their art and leaving it a hollow shell of what it once was, wasting time they could spend doing what they do well, that is, writing great novels, developing great games, using whatever tools they decide are necessary, be that complex vocabulary that makes it difficult to read for 12 year-olds, or difficulty that makes the game difficult to plow through on your first attempt without a moments thought.
Brave New World is great because of it's use of extremely clever and somewhat complicated (for want of a better word) vocabulary (amongst other reasons), Dark Souls is great because of it's use of difficulty (amongst other reasons). With the vocabulary of the average 12 year old, Brave New World would be nothing more than an average storybook, with a difficulty the average 12 year old could crack on their first run through without dying once, Dark Souls would be nothing more than an average RPG.
Not everything needs to be accessible for everyone.
Personally i'd be perfectly ok with an easy-mode, provided it comes in a completely separate game, is called something else and generally stays the fuck away from the game itself. If it comes as part of the Souls game itself, that means developers have had to account and balance the game itself for it to some extent, and that is the last thing i want.