I suggest reconsider:
Remove the preservation of the quality of the original culture when growing troll mushrooms on mounds. Since when you find and kill a high-quality troll, you get an infinite preservation of the quality of the compost in the future.
In world 14 it was possible to use quests to raise the quality of animals up to 1000 quality.
Please consider the change so as not to receive such benefits in questing.
Thank you!