If you want this game to be hard, play a private server or do an Ironman challenge.
This isn't a competitive game. It's a silly MMO with simple controls and silly enemies. The overwhelming majority of fans just want the game to be fun. Nexon isn't gonna listen to the vocal minority of fans that keep demanding they make the game hard for the sake of being hard.
If you want a challenge, then make it yourself. Other MMOs have an "Ironman Mode" that prevents you from trading, and a "Hardcore Mode" where death is permanent. Some games let you combine both modes. These started as self-imposed challenges that became official game modes after getting popular. You can enhance the challenge even further by avoiding the crafting and/or storage systems.
Instead of demanding they make the entire game harder, just ask Nexon to make challenge modes like Ironman and Hardcore Ironman, complete with their own leaderboards.