In my opinion, it would be great to create a table showing how the hero's primary stats increase at each level (based on the stated percentage chance of each stat appearing). When playing as mages, I often found that I gained significantly more magic than the stated percentage. Or, when playing as necromancers/dark elves, I often didn't get the +knowledge bonus by level 10.

The game has a chance for a particular stat to appear, such as attack, defense, etc. These are listed in the game manual on page 300. For example, at level 21, a mage has: 2 attack, 3 defense, 8 magic, and 12 knowledge. This has all been done before. The fact that these are chances means that they can differ slightly from the stated values; this is probability theory. If you understand this, you won't be surprised by anything. The more you know about the game, the more likely you are to be able to predict whether a skill will work or not, what will appear when leveling up, and whether you will be able to pick up an artifact from a chest, based on the THEORY OF PROBABILITY. If you don't understand the game or are not familiar with this theory, everything will be questionable for you. If you remove the probabilistic elements from the game, it will become boring and will be like a calculator, where everything can be calculated.