How can the game be made more realistic?

While browsing the spells in Heroes 3, I noticed that many of them are never used. After some thought, I realized that the original concept of combat was quite different. Most spells are designed for individual use, but it’s clear that using them is pointless when a head-on clash occurs (7 vs. 7). So, here’s my question: is it possible to somehow reduce the number of creature slots in a hero’s army, as well as reduce the weekly creature growth rate? For example, if the number of slots is reduced from 7 to 3, this will automatically redistribute the entire existing “value system” towards spells. This will immediately make spells like “Destructive Ray,” “Clone,” and “Executioner” meaningful. In turn, reducing the weekly growth rate will force players to be more careful about losses, and battles with neutral monsters will become more dangerous, etc. Therefore, the question is: are there any mods for Heroes 3 that would allow you to do what is described above?