Modding

Hello! I have several questions regarding modifying the original game version 1.6, hoping that someone knows the answers: 1. As far as I know, creature abilities are embedded in some "exe file." Is it possible to edit it? I want to add and remove abilities for different creatures, but in the game files that open in Notepad and contain creature characteristics, there are no lines with abilities, as there should be in the enhanced game version 3.0 or 3.1. 2. Is it possible to change the settings for the chances of heroes gaining unit characteristics, skills, and abilities? For example, for humans, the chances of acquiring characteristics look like this: 30% (attack), 45% (defense), 10% (magic), 15% (knowledge). How can I find the file, if it exists, to edit the chances? (P.S. I don't understand why a high elf has a 30% chance of gaining knowledge). The same applies to skills. For example, the chance for education is very low. Conditionally, 2% for certain Factions. How can I change this? 3. Is it possible to replace one of a hero's specialized abilities with a super ability? For example, replace the "enchanted arrow" of the high elves with "true luck." 4. Can the restrictions on building cities in the game's Campaigns be removed? For example, in the third mission for Agrael (conquest), allow the player to fully build a city. Or in the second mission for Faidaen (emerald), build a capitol. 5. Can a mission in a Campaign be edited? For example, so that in the third mission for Railegh (servant of the cult), the player starts with a built city, including the Tear of Ashera, which we all search for in the second mission. 6. Has anyone tried changing creature levels, as well as the buildings in which they are recruited? All my endless attempts at manipulation have not yielded the desired result. Is this even possible? For example, make genies and sultans level 4 creatures (as well as the buildings), and mages and archmages level 5? There are many questions, and a lot of text. If you have read to the end, thank you for your attention!