If you wander the module, you may discover some druid glades are available.
These glades work on the prestige system, so as you empower them, you will see definite results as they grow due to your care and attention. While druids and rangers will likely have the most to do with these glades, there are some things available for other classes as well - particularly if you're inclined to nature.
They may be a little buggy; I have certainly never tried to use our prestige system quite this way. Especially the Seelie/Unseelie Glade. If something seems very off, let me know via a Bug Report asap. :) Otherwise, enjoy! I'm already off on the next fun project.