In Final Fantasy XI's next major version update, the battlefields of the Walk of Echoes area will be seeing several modifications, adjustments, and additions. These changes, aimed to make the fights more accessible and rewarding while at the same time more challenging, are to include revisions to coin and loot distribution, the introduction of higher tier battlefields, and much more.

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From the Official Final Fantasy XI forums:

A number of changes will be introduced to Walk of Echoes battlefields in the next version update:

• General
  

  • The no-reservation system will be preserved.
  • The once-per-Vana’diel-day entry restriction will be preserved.
  • All PCs in a single battlefield will form an allied group, similar to Campaign battles.
  • The spawn delay for subsequent waves of monsters in each walk will be reduced.
  • The cutscene displayed upon receiving Kupofried’s medallion will appear only once.
  • New upper-tier walks will be added.

• Evaluation and Rewards
  

  • Evaluation conditions will be revised.
  • The system providing exclusive rewards to only the highest-rated participants will be changed to one in which all characters rated above a certain level will qualify for extra spoils.
  • Monster item drops and lottable spoils will be abolished.
  • New rewards will be added.
  • Coin drop rate will be increased.

• Difficulty Adjustments
  

  • The linked enmity system will be revised.
  • Characters who remain KO'd for 30 seconds will automatically receive a Raise effect.
  • A possible time limit extension to 60 minutes is under consideration.