Great idea with your new mod, I have IMHO a few suggestions:
1. If possible, add the option to make your unit in army to have individual experience level & abilities, like pcbun in awesome KBAP mod:
http://forum.1cpublishing.eu/showthread.php?t=14741
2. Really, the total result maybe would be too overpowered and game finally "boring" even on Impossible difficulty - please
really keep the total game balance, for whole gameplay.
For example, in Skill Changes I propose back to original values and even notably lower values of new bonuses if the mod gives so many new almighty, so powerful bonuses.
The total result would be pretty devastating for any enemy, even on beginning/middle of gameplay. I don't want fast game with my army of overpowered quick terminators of any 5-th level enemy units - where would be pleasure from gaming and strategic planning, thinking of wise development of hero, tactical solutions of battles with our even weaker forces?