He means to have the same map in several slightly different versions, all created by different people, every single version naturally 'better' and more 'balanced' than the other versions.
Like I said before, it's not a smart thing to touch the stock maps, because the results are rarely satisfying, as your changed version of Tremor clearly shows. Try to focus on creating original work, at least from me you gain more admiration with a half-decent original
piece of work, instead of rather obsolete stuff like this. You could be improving your other maps as we speak, or creating new worlds. Isn't that much more exciting that this? I can understand your need for quick recognition, but this is not the way to go.