[Balance] Herbs respect potential maximums
Herbs should not train a stat above its potential maximum
Herb farming is a tedious chore, but one that many players feel they have to go through because of its massive impact on the game. Being able to train Dx/Wi/To to 25 adds so much to survivability that nearly every character ends up doing this mindless grinding.
My suggestion to address this is to disallow herbs from raising potential maximums.
Right now, potential maximums have little relevance on the game. They merely slow down training, even though supposedly they can only rarely be surpassed naturally. If herbs respect these maximums, we won't end up with every character looking identical by the midgame. (on a flavor note, it explains why the farmers in Terinyo aren't all supermen with troll-like constitutions, elf-like agility and wills of iron). This makes potions of potential stat actually useful, instead of being marginally worse than potions of uselessness.
It also means that players won't feel obligated to spend as much time farming stat herbs. If your willpower has a potential maximum of 15, you only need to pick enough to get it there, which can easily be obtained without serious farming. But being able to push willpower up to 25 with no additional risk means there's pressure to set up camp and gather a hundred morgia instead of actually playing the game.