Let's start a discussion of what you would like to see, or could conceptualize adding to existing MMORPGs to place them into the "next generation"
The imfamous "Leeeroy Jenkins" video from WoW lead me to think...
If you could "write in" your own "team speak or Ventrilio" software into your MMORPG and make the mouths move as you speak through the microphone, and have an "adjuster" panel to disguise your voice, making it more "elf" or "dragon" like based on the character you are playing.
I have no idea what overhead that would cause, but we are talking "future" MMORPGs and what would be neat "additions" in a whole.
Perhaps it's not a hardware addition, but a software one, people are wanting destructable environments (like half life) or the life like mannequin looking rag doll effect when your body freely has limbs and body bending and flailing when it's struck.
Or.... how about support for multi monitors? have that 180 degree view (and maybe even a back monitor or Picture in Picture support for a rear-view (Is that monster still chasing me as I have 10 health and are running away).