There are two considerations for implementing the difficulty system. The first is gameplay. This has to do with the sense of achievement, progression, and overall challenge (especially for Ultimate Mode). Difficulty Mode is an extra element one must consider in PvP and when dungeon crawling. The other, quite honestly, is the business model. Being a free-to-play MMORPG, Shaiya must generate revenues in some way to keep the game running. A big source of this is from the Ultimate Mode characters that use our resurrection runes to prevent permanent deletion. This method circumvents the "freemium" model in a way that allows everyone to experience all content within the game on similar terms.