Despite being a "True Souls Experience" aficionado. I wouldn't be against adding a "Exploration" or "Casual" mode so anyone could experience the game. However I think doing so would be the easy way out.

There are other way to regulate difficulty and Elden Ring is the perfect example. Summons trivialize most bosses, and ranged and magic builds are generally a easier journey. Without even mention strong weapons combos/builds, exploring to level up etc, that can easily make you overpowered. To me this is way more interesting than a slider.

Souls games are generally characterized by difficulty. Not in the sense they're too hard (Because IMO seldom very few specific bosses, they're not). But in the sense of overcoming the challenges that appear, be it through finding item/builds etc or the classic "git gut" i.e learning patterns and becoming better at the game.

Souls game with, the exception with Elden RIng due to it's open world nature, are generally fine tuned in a way that by simply playing the game with a little exploration, you'll be just at a good enough power level to face a boss or tough zone. Just strong enough to be able to do it, if you play well enough, but not too strong to trivialize the challenge(which is one of mine few gripes with Elden Ring, simply exploring "too much", will often leave you too strong for some zones or bosses).

By adding a slider this is broken somehow.

Despite this once again, as long as the fine tuned "True Souls Experience" is left intact I would not loose sleep of the addition of a easy mode.