sliders are a TERRIBLE idea. may aswell remove all difficulty then. no thanks to forced casulization. not all games need to be made for everyone. common misconception of modern age.

difficulty settings being added POST EA is kind of difficult for a game where skills take a longass time to level.... this would FORCE restart of the character in essence. not a good solution either. this game was clearly designed with ONE difficulty in mind. you can see this in every system in the game. changing that later would be like adding difficulty levels to dork souls nowadays. it... just wouldnt work out well at all.

this is something a dev needs to decide BEFORE releaseing a game to public. especially games which can go on for such a long time. shorter quicker games can change such stuff later on compared.

the better method would be to provide more gear and upgrade options. so players can power themselfs up more or prepare more to overcome a challenge.