One facet of video games that's been around almost since the very beginning is the difficulty level. This has allowed the player to choose how hard or easy a game would be from the onset, influencing factors such as the number of enemies, hardiness of bad guys, fragility of the player character, and available loot (or lack of it). I used to love how some of those '90s shareware titles would mock me for picking easy, sometimes portraying my character wearing a baby bonnet and sucking its thumb. Real gamers, the devs implied, go tough or go home.
With a few exceptions, MMOs operate on a fixed level of difficulty for all of their players. Instead of assigning blanket difficulty client-side, the game world portions difficulty into areas, usually according to level or activity. Some games have instances with adjustable difficulty levels, but past that what you get is also what I get.
This might be changing. A very fringe but dedicated group of players have championed such ideas as elective ironman and permadeath modes
for their MMOs, and at least one studio is responding positively to that desire. Would you choose to make your MMO experience harder than everyone else in exchange for nothing more than a bigger challenge and a more "realistic" experience?